Add PurgeCSS and Terser to CI example and remove whitespaces from par…

…tials

Closes #5

_includes/partials/checks.html

@@ -1,34 +1,34 @@
-{% assign errors = '' | split: ',' %}
+{%- assign errors = '' | split: ',' -%}
 
-{% unless site.data.lang.version %}
-  {% unless site.conference.lang == "en" %}
-    {% assign errors = errors | push : "The internationalization file containing different strings for this template seems to be missing. Have you copied the `_data/lang.yml` file from the [theme's repository](https://github.com/DigitaleGesellschaft/jekyll-theme-conference/blob/master/_data/lang.yml) to you local website folder?" %}
-  {% endunless %}
-{% elsif site.data.lang.version < 4 %}
-  {% assign errors = errors | push : "The internationalization file in `_data/lang.yml` seems to be outdated and does not correspond to the current version of the theme. Grab the current version from the [theme's repository](https://github.com/DigitaleGesellschaft/jekyll-theme-conference/blob/master/_data/lang.yml)." %}
-{% endunless %}
-{% unless site.conference.lang == "en" or site.conference.lang == "de" or site.conference.lang == "fr" or site.conference.lang == "pt" %}
-  {% assign errors = errors | push : "Unknown language selected for `site.conference.lang` parameter. Supported are `en`, `de`, `fr`, and `pt`." %}
-{% endunless %}
+{%- unless site.data.lang.version -%}
+  {%- unless site.conference.lang == "en" -%}
+    {%- assign errors = errors | push : "The internationalization file containing different strings for this template seems to be missing. Have you copied the `_data/lang.yml` file from the [theme's repository](https://github.com/DigitaleGesellschaft/jekyll-theme-conference/blob/master/_data/lang.yml) to you local website folder?" -%}
+  {%- endunless -%}
+{%- elsif site.data.lang.version < 4 -%}
+  {%- assign errors = errors | push : "The internationalization file in `_data/lang.yml` seems to be outdated and does not correspond to the current version of the theme. Grab the current version from the [theme's repository](https://github.com/DigitaleGesellschaft/jekyll-theme-conference/blob/master/_data/lang.yml)." -%}
+{%- endunless -%}
+{%- unless site.conference.lang == "en" or site.conference.lang == "de" or site.conference.lang == "fr" or site.conference.lang == "pt" -%}
+  {%- assign errors = errors | push : "Unknown language selected for `site.conference.lang` parameter. Supported are `en`, `de`, `fr`, and `pt`." -%}
+{%- endunless -%}
 
-{% assign program_size = site.data.program | size %}
-{% if program_size == 0 %}
-  {% assign errors = errors | push : "Your schedule in `_data/program.yml` does not seem to contain any entry. Have you already created the file?" %}
-{% endif %}
-{% assign talk_size = site.talks | size %}
-{% if talk_size == 0 %}
-  {% assign errors = errors | push : "The `talks` collection does not seem to contain any entry. Have you accidentially renamed the collection or is your `_talks/` folder empty?" %}
-{% endif %}
-{% assign speaker_size = site.speakers | size %}
-{% if speaker_size == 0 %}
-  {% assign errors = errors | push : "The `speakers` collection does not seem to contain any entry. Have you accidentially renamed the collection or is your `_speakers/` folder empty?" %}
-{% endif %}
-{% assign room_size = site.rooms | size %}
-{% if room_size == 0 %}
-  {% assign errors = errors | push : "The `rooms` collection does not seem to contain any entry. Have you accidentially renamed the collection or is your `_rooms/` folder empty?" %}
-{% endif %}
+{%- assign program_size = site.data.program | size -%}
+{%- if program_size == 0 -%}
+  {%- assign errors = errors | push : "Your schedule in `_data/program.yml` does not seem to contain any entry. Have you already created the file?" -%}
+{%- endif -%}
+{%- assign talk_size = site.talks | size -%}
+{%- if talk_size == 0 -%}
+  {%- assign errors = errors | push : "The `talks` collection does not seem to contain any entry. Have you accidentially renamed the collection or is your `_talks/` folder empty?" -%}
+{%- endif -%}
+{%- assign speaker_size = site.speakers | size -%}
+{%- if speaker_size == 0 -%}
+  {%- assign errors = errors | push : "The `speakers` collection does not seem to contain any entry. Have you accidentially renamed the collection or is your `_speakers/` folder empty?" -%}
+{%- endif -%}
+{%- assign room_size = site.rooms | size -%}
+{%- if room_size == 0 -%}
+  {%- assign errors = errors | push : "The `rooms` collection does not seem to contain any entry. Have you accidentially renamed the collection or is your `_rooms/` folder empty?" -%}
+{%- endif -%}
 
-{% assign main_category_size = site.conference.talks.main_categories | size %}
-{% if main_category_size == 0 %}
-  {% assign errors = errors | push : "Your `_config.yml` configuration file does not define any main category for your talks. Have you set the `conference.talks.main_categories` property? See also [Talk Settings](https://github.com/DigitaleGesellschaft/jekyll-theme-conference/#talk-settings) section in the theme's README file." %}
-{% endif %}
+{%- assign main_category_size = site.conference.talks.main_categories | size -%}
+{%- if main_category_size == 0 -%}
+  {%- assign errors = errors | push : "Your `_config.yml` configuration file does not define any main category for your talks. Have you set the `conference.talks.main_categories` property? See also [Talk Settings](https://github.com/DigitaleGesellschaft/jekyll-theme-conference/#talk-settings) section in the theme's README file." -%}
+{%- endif -%}

_includes/partials/footer.html

@@ -21,9 +21,9 @@ <h5 class="modal-title" id="link-modal-label"></h5>
     </div>
   </div>
 
-  {% if site.conference.live.streaming %}
-    {% include partials/live-modal.html %}
-  {% endif %}
+  {%- if site.conference.live.streaming -%}
+    {%- include partials/live-modal.html -%}
+  {%- endif -%}
 
   <!-- Append build time to avoid caching of live program embedded in JavaScript file -->
   <script src="{{ site.baseurl }}/assets/js/main.js?t={{ site.time | date: "%s" }}"></script>

_includes/partials/get_conf_time.html

@@ -1,54 +1,54 @@
-{% for room in site.data.program %}
-  {% assign t = room.talks | first %}
-  {% include partials/get_talk_time.html %}
-
-  {% assign update_var = false %}
-
-  {% unless conf_start_hour %}
-    {% assign update_var = true %}
-  {% else %}
-    {% if talk_start_hour < conf_start_hour %}
-      {% assign update_var = true %}
-    {% elsif talk_start_hour == conf_start_hour and talk_start_min < conf_start_min %}
-      {% assign update_var = true %}
-    {% endif %}
-  {% endunless %}
-
-  {% if update_var %}
-    {% assign conf_start_hour = talk_start_hour %}
-    {% assign conf_start_min = talk_start_min %}
-  {% endif %}
-
-  {% assign t = room.talks | last %}
-  {% include partials/get_talk_time.html %}
-
-  {% assign update_var = false %}
-
-  {% unless conf_end_hour %}
-    {% assign update_var = true %}
-  {% else %}
-    {% if talk_end_hour > conf_end_hour %}
-      {% assign update_var = true %}
-    {% elsif talk_end_hour == conf_end_hour and talk_end_min > conf_end_min %}
-      {% assign update_var = true %}
-    {% endif %}
-  {% endunless %}
-
-  {% if update_var %}
-    {% assign conf_end_hour = talk_end_hour %}
-    {% assign conf_end_min = talk_end_min %}
-  {% endif %}
-{% endfor %}
-
-{% if conf_start_min < 10 %}
-  {% assign conf_start = conf_start_hour | append: ":0" | append: conf_start_min %}
-{% else %}
-  {% assign conf_start = conf_start_hour | append: ":" | append: conf_start_min %}
-{% endif %}
-{% if conf_end_min < 10 %}
-  {% assign conf_end = conf_end_hour | append: ":0" | append: conf_end_min %}
-{% else %}
-  {% assign conf_end = conf_end_hour | append: ":" | append: conf_end_min %}
-{% endif %}
-
-{% assign conf_duration_min = conf_end_hour | minus: conf_start_hour | times: 60 | minus: conf_start_min | plus: conf_end_min %}
+{%- for room in site.data.program -%}
+  {%- assign t = room.talks | first -%}
+  {%- include partials/get_talk_time.html -%}
+
+  {%- assign update_var = false -%}
+
+  {%- unless conf_start_hour -%}
+    {%- assign update_var = true -%}
+  {%- else -%}
+    {%- if talk_start_hour < conf_start_hour -%}
+      {%- assign update_var = true -%}
+    {%- elsif talk_start_hour == conf_start_hour and talk_start_min < conf_start_min -%}
+      {%- assign update_var = true -%}
+    {%- endif -%}
+  {%- endunless -%}
+
+  {%- if update_var -%}
+    {%- assign conf_start_hour = talk_start_hour -%}
+    {%- assign conf_start_min = talk_start_min -%}
+  {%- endif -%}
+
+  {%- assign t = room.talks | last -%}
+  {%- include partials/get_talk_time.html -%}
+
+  {%- assign update_var = false -%}
+
+  {%- unless conf_end_hour -%}
+    {%- assign update_var = true -%}
+  {%- else -%}
+    {%- if talk_end_hour > conf_end_hour -%}
+      {%- assign update_var = true -%}
+    {%- elsif talk_end_hour == conf_end_hour and talk_end_min > conf_end_min -%}
+      {%- assign update_var = true -%}
+    {%- endif -%}
+  {%- endunless -%}
+
+  {%- if update_var -%}
+    {%- assign conf_end_hour = talk_end_hour -%}
+    {%- assign conf_end_min = talk_end_min -%}
+  {%- endif -%}
+{%- endfor -%}
+
+{%- if conf_start_min < 10 -%}
+  {%- assign conf_start = conf_start_hour | append: ":0" | append: conf_start_min -%}
+{%- else -%}
+  {%- assign conf_start = conf_start_hour | append: ":" | append: conf_start_min -%}
+{%- endif -%}
+{%- if conf_end_min < 10 -%}
+  {%- assign conf_end = conf_end_hour | append: ":0" | append: conf_end_min -%}
+{%- else -%}
+  {%- assign conf_end = conf_end_hour | append: ":" | append: conf_end_min -%}
+{%- endif -%}
+
+{%- assign conf_duration_min = conf_end_hour | minus: conf_start_hour | times: 60 | minus: conf_start_min | plus: conf_end_min -%}

_includes/partials/get_link.html

@@ -1,71 +1,71 @@
 
-{% assign link_disabled = link.disabled %}
-{% assign link_icon = link.icon %}
-{% assign link_iframe = link.iframe %}
+{%- assign link_disabled = link.disabled -%}
+{%- assign link_icon = link.icon -%}
+{%- assign link_iframe = link.iframe -%}
 
-{% if link.absolute_url %}
-  {% assign link_href = link.absolute_url %}
+{%- if link.absolute_url -%}
+  {%- assign link_href = link.absolute_url -%}
 
-{% elsif link.relative_url %}
-  {% assign link_href = link.relative_url | prepend: site.baseurl %}
+{%- elsif link.relative_url -%}
+  {%- assign link_href = link.relative_url | prepend: site.baseurl -%}
 
-{% elsif link.file %}
-  {% assign link_icon = "file-alt" %}
+{%- elsif link.file -%}
+  {%- assign link_icon = "file-alt" -%}
 
-  {% if talk %}
-    {% assign link_href = link.file | prepend: '/documents/slides/' | prepend: site.baseurl %}
+  {%- if talk -%}
+    {%- assign link_href = link.file | prepend: '/documents/slides/' | prepend: site.baseurl -%}
 
-  {% elsif speaker %}
-    {% assign link_href = link.file | prepend: '/documents/bio/' | prepend: site.baseurl %}
+  {%- elsif speaker -%}
+    {%- assign link_href = link.file | prepend: '/documents/bio/' | prepend: site.baseurl -%}
 
-  {% else %}
-    {% assign link_href = link.file | prepend: '/documents/' | prepend: site.baseurl %}
+  {%- else -%}
+    {%- assign link_href = link.file | prepend: '/documents/' | prepend: site.baseurl -%}
 
-  {% endif %}
+  {%- endif -%}
 
-{% elsif link.video %}
-  {% assign link_href = link.video %}
-  {% assign link_icon = "video" %}
-  {% assign link_iframe = true %}
+{%- elsif link.video -%}
+  {%- assign link_href = link.video -%}
+  {%- assign link_icon = "video" -%}
+  {%- assign link_iframe = true -%}
 
-  {% if talk %}
-    {% capture modal_header %}
+  {%- if talk -%}
+    {%- capture modal_header -%}
       <h3 class="font-weight-light">
-        {% if talk.hide %}
+        {%- if talk.hide -%}
           {{ talk.name }}
-        {% else %}
+        {%- else -%}
           <a class="text-reset" href="{{ talk.url | prepend: site.baseurl }}">
             {{ talk.name }}
           </a>
-        {% endif %}
+        {%- endif -%}
       </h3>
       <p class="mb-0 font-weight-light">
-        {% include partials/list_speakers.html %}
+        {%- include partials/list_speakers.html -%}
       </p>
-    {% endcapture %}
+    {%- endcapture -%}
 
-  {% elsif speaker %}
-    {% capture modal_header %}
+  {%- elsif speaker -%}
+    {%- capture modal_header -%}
       <h3 class="mb-0 font-weight-light">
-        {% if speaker.hide %}
+        {%- if speaker.hide -%}
           {{ speaker.first_name }} {{ speaker.last_name }}
-        {% else %}
+        {%- else -%}
           <a class="text-reset" href="{{ speaker.url | prepend: site.baseurl }}">
             {{ speaker.first_name }} {{ speaker.last_name }}
           </a>
-        {% endif %}
+        {%- endif -%}
       </h3>
-    {% endcapture %}
-    {% assign modal_desc = link.name %}
+    {%- endcapture -%}
+    {%- assign modal_desc = link.name -%}
 
-  {% endif %}
+  {%- endif -%}
 
-{% else %}
-  {% assign link_disabled = true %}
+{%- else -%}
+  {%- assign link_disabled = true -%}
 
-{% endif %}
+{%- endif -%}
 
-{% capture link_tag -%}
+{%- capture link_tag -%}
   {%- if link.disabled -%}
     <a class="disabled{% if link_styleclass %} {{ link_styleclass }}{% endif %}" href="#">
 
@@ -88,6 +88,6 @@ <h3 class="mb-0 font-weight-light">
     <a{% if link_styleclass %} class="{{ link_styleclass }}"{% endif %} href="{{ link_href }}" title="{{ link.name }}">
 
   {%- endif -%}
-{%- endcapture %}
+{%- endcapture -%}
 
-{% assign link_styleclass = "" %}
+{%- assign link_styleclass = "" -%}

_includes/partials/get_link_types.html

@@ -1,15 +1,15 @@
-{% if talk %}
-  {% assign links = talk.links%}
-{% else if speaker %}
-  {% assign links = speaker.links%}
-{% endif %}
+{%- if talk -%}
+  {%- assign links = talk.links -%}
+{%- else if speaker -%}
+  {%- assign links = speaker.links -%}
+{%- endif -%}
 
-{% assign has_icon_links = false %}
-{% assign has_regular_links = false %}
-{% for link in links %}
-  {% if link.icon or link.file or link.video %}
-    {% assign has_icon_links = true %}
-  {% else %}
-    {% assign has_regular_links = true %}
-  {% endif %}
-{% endfor %}
+{%- assign has_icon_links = false -%}
+{%- assign has_regular_links = false -%}
+{%- for link in links -%}
+  {%- if link.icon or link.file or link.video -%}
+    {%- assign has_icon_links = true -%}
+  {%- else -%}
+    {%- assign has_regular_links = true -%}
+  {%- endif -%}
+{%- endfor -%}

_includes/partials/get_main_category.html

@@ -1,9 +1,9 @@
-{% for main_cat in site.conference.talks.main_categories %}
-  {% for cat in talk.categories %}
-    {% if cat == main_cat.name %}
-      {% assign main_cat = main_cat.name %}
-      {% assign main_cat_color = main_cat.color %}
-      {% break %}
-    {% endif %}
-  {% endfor %}
-{% endfor %}
+{%- for main_cat in site.conference.talks.main_categories -%}
+  {%- for cat in talk.categories -%}
+    {%- if cat == main_cat.name -%}
+      {%- assign main_cat = main_cat.name -%}
+      {%- assign main_cat_color = main_cat.color -%}
+      {%- break -%}
+    {%- endif -%}
+  {%- endfor -%}
+{%- endfor -%}

_includes/partials/get_talk_time.html

@@ -1,9 +1,9 @@
-{% assign talk_start = t.time_start %}
-{% assign talk_end = t.time_end %}
+{%- assign talk_start = t.time_start -%}
+{%- assign talk_end = t.time_end -%}
 
-{% assign talk_start_hour = talk_start | split: ':' | first %}
-{% assign talk_start_min = talk_start | split: ':' | last | divided_by: site.conference.program.time_steps | floor | times: site.conference.program.time_steps %}
-{% assign talk_end_hour = talk_end | split: ':' | first %}
-{% assign talk_end_min = talk_end | split: ':' | last | divided_by: site.conference.program.time_steps | ceil | times: site.conference.program.time_steps %}
+{%- assign talk_start_hour = talk_start | split: ':' | first -%}
+{%- assign talk_start_min = talk_start | split: ':' | last | divided_by: site.conference.program.time_steps | floor | times: site.conference.program.time_steps -%}
+{%- assign talk_end_hour = talk_end | split: ':' | first -%}
+{%- assign talk_end_min = talk_end | split: ':' | last | divided_by: site.conference.program.time_steps | ceil | times: site.conference.program.time_steps -%}
 
-{% assign talk_duration_min = talk_end_hour | minus: talk_start_hour | times: 60 | minus: talk_start_min | plus: talk_end_min %}
+{%- assign talk_duration_min = talk_end_hour | minus: talk_start_hour | times: 60 | minus: talk_start_min | plus: talk_end_min -%}

_includes/partials/get_timestamp.html

@@ -1,4 +1,4 @@
-{% assign datetime_start = site.conference.live.date | append: " " | append: time_start | append: " " | append: site.conference.live.timezone %}
-{% assign timestamp_start = datetime_start | date: "%s" %}
-{% assign datetime_end = site.conference.live.date | append: " " | append: time_end | append: " " | append: site.conference.live.timezone %}
-{% assign timestamp_end = datetime_end | date: "%s" %}
+{%- assign datetime_start = site.conference.live.date | append: " " | append: time_start | append: " " | append: site.conference.live.timezone -%}
+{%- assign timestamp_start = datetime_start | date: "%s" -%}
+{%- assign datetime_end = site.conference.live.date | append: " " | append: time_end | append: " " | append: site.conference.live.timezone -%}
+{%- assign timestamp_end = datetime_end | date: "%s" -%}