Fix github link in docs

docs/_templates/breadcrumbs.html

@@ -0,0 +1,94 @@
+{# Support for Sphinx 1.3+ page_source_suffix, but don't break old builds. #}
+
+{% if page_source_suffix %}
+{% set suffix = page_source_suffix %}
+{% else %}
+{% set suffix = source_suffix %}
+{% endif %}
+
+{# modification to enable custom github_url #}
+
+{% if meta is not defined or meta is not none%}
+    {% set meta = {} %}
+{% endif %}
+
+{% if github_url is defined %}
+    {% set _dummy = meta.update({'github_url': github_url}) %}
+{% endif %}
+
+{# // modification to enable custom github_url #}
+
+{% if meta is defined and meta is not none %}
+{% set check_meta = True %}
+{% else %}
+{% set check_meta = False %}
+{% endif %}
+
+{% if check_meta and 'github_url' in meta %}
+{% set display_github = True %}
+{% endif %}
+
+{% if check_meta and 'bitbucket_url' in meta %}
+{% set display_bitbucket = True %}
+{% endif %}
+
+{% if check_meta and 'gitlab_url' in meta %}
+{% set display_gitlab = True %}
+{% endif %}
+
+<div role="navigation" aria-label="breadcrumbs navigation">
+
+  <ul class="wy-breadcrumbs">
+    {% block breadcrumbs %}
+      <li><a href="{{ pathto(master_doc) }}">{{ _('Docs') }}</a> &raquo;</li>
+        {% for doc in parents %}
+          <li><a href="{{ doc.link|e }}">{{ doc.title }}</a> &raquo;</li>
+        {% endfor %}
+      <li>{{ title }}</li>
+    {% endblock %}
+    {% block breadcrumbs_aside %}
+      <li class="wy-breadcrumbs-aside">
+        {% if hasdoc(pagename) %}
+            {% if display_github %}
+            {% if check_meta and 'github_url' in meta %}
+              <!-- User defined GitHub URL -->
+              <a href="{{ meta['github_url'] }}" class="fa fa-github"> {{ _('Edit on GitHub') }}</a>
+            {% else %}
+              <a href="https://{{ github_host|default("github.com") }}/{{ github_user }}/{{ github_repo }}/{{ theme_vcs_pageview_mode|default("blob") }}/{{ github_version }}{{ conf_py_path }}{{ pagename }}{{ suffix }}" class="fa fa-github"> {{ _('Edit on GitHub') }}</a>
+            {% endif %}
+          {% elif display_bitbucket %}
+            {% if check_meta and 'bitbucket_url' in meta %}
+              <!-- User defined Bitbucket URL -->
+              <a href="{{ meta['bitbucket_url'] }}" class="fa fa-bitbucket"> {{ _('Edit on Bitbucket') }}</a>
+            {% else %}
+              <a href="https://bitbucket.org/{{ bitbucket_user }}/{{ bitbucket_repo }}/src/{{ bitbucket_version}}{{ conf_py_path }}{{ pagename }}{{ suffix }}?mode={{ theme_vcs_pageview_mode|default("view") }}" class="fa fa-bitbucket"> {{ _('Edit on Bitbucket') }}</a>
+            {% endif %}
+          {% elif display_gitlab %}
+            {% if check_meta and 'gitlab_url' in meta %}
+              <!-- User defined GitLab URL -->
+              <a href="{{ meta['gitlab_url'] }}" class="fa fa-gitlab"> {{ _('Edit on GitLab') }}</a>
+            {% else %}
+              <a href="https://{{ gitlab_host|default("gitlab.com") }}/{{ gitlab_user }}/{{ gitlab_repo }}/{{ theme_vcs_pageview_mode|default("blob") }}/{{ gitlab_version }}{{ conf_py_path }}{{ pagename }}{{ suffix }}" class="fa fa-gitlab"> {{ _('Edit on GitLab') }}</a>
+            {% endif %}
+          {% elif show_source and source_url_prefix %}
+            <a href="{{ source_url_prefix }}{{ pagename }}{{ suffix }}">{{ _('View page source') }}</a>
+          {% elif show_source and has_source and sourcename %}
+            <a href="{{ pathto('_sources/' + sourcename, true)|e }}" rel="nofollow"> {{ _('View page source') }}</a>
+          {% endif %}
+        {% endif %}
+      </li>
+    {% endblock %}
+  </ul>
+
+  {% if (theme_prev_next_buttons_location == 'top' or theme_prev_next_buttons_location == 'both') and (next or prev) %}
+  <div class="rst-breadcrumbs-buttons" role="navigation" aria-label="breadcrumb navigation">
+      {% if next %}
+        <a href="{{ next.link|e }}" class="btn btn-neutral float-right" title="{{ next.title|striptags|e }}" accesskey="n">Next <span class="fa fa-arrow-circle-right"></span></a>
+      {% endif %}
+      {% if prev %}
+        <a href="{{ prev.link|e }}" class="btn btn-neutral float-left" title="{{ prev.title|striptags|e }}" accesskey="p"><span class="fa fa-arrow-circle-left"></span> Previous</a>
+      {% endif %}
+  </div>
+  {% endif %}
+  <hr/>
+</div>