feat(templates): recombinant datatable headers;

- Started working with recombinant dictionaries into datatable headers.

ckanext/canada/templates/public/datatables/datatables_view.html

@@ -28,6 +28,47 @@
   </div>
 {% endblock %}
 
+{%- block datatable_field_headers -%}
+
+  {% set chromo = h.recombinant_published_resource_chromo(resource.id) %}
+  {% if chromo %}
+
+    {% set chromo_keyed = {} %}
+    {% for recombinant_field in chromo.fields %}
+      {% set _ = chromo_keyed.update({recombinant_field.datastore_id: {description: recombinant_field.description,
+                                                                       label: recombinant_field.label}}) %}
+    {% endfor %}
+
+    {% set datadictionary_fields = h.datastore_dictionary(resource.id) %}
+
+    {% for field in datadictionary_fields %}
+
+      {% if 'show_fields' not in resource_view or field.id in resource_view.show_fields -%}
+
+        {% if field.id in chromo_keyed %}
+        {# the DS field is a Recombinant field, use chromo #}
+          {% set description = h.recombinant_language_text(chromo_keyed[field.id].description) | replace('\n', '<br>' | safe) %}
+          {% set label = h.recombinant_language_text(chromo_keyed[field.id].label) | trim %}
+          <th scope="col">{{ label }}&nbsp;<i class="fa fa-info-circle" title="{{ h.markdown_extract(description, 300) }}"></i>&nbsp;</th>
+        {% else %}
+        {# the DS field is NOT a Recombinant field, use parent #}
+          {# TODO: solve issue with passing field over to scoped block #}
+          <th scope="col">{{ self.datatable_column_label(field) }}</th>
+        {% endif %}
+
+      {%- endif %}
+
+    {% endfor %}
+
+  {% else %}
+
+    {{ super() }}
+
+  {% endif %}
+
+{%- endblock -%}
+
+
 {%- block datatable_column_label -%}
   {%- set label = 'label_' + h.lang() -%}
   {%- set description = 'notes_' + h.lang() -%}