Optimize the way tag list is rendered

Instead of retrieve all informations about entries of a tag to just count them, we’ll count them before with a fastest query.

Also change the layout of the tag list in material design

src/Wallabag/CoreBundle/Resources/views/themes/baggy/Tag/tags.html.twig

@@ -9,7 +9,7 @@
 
     <ul>
     {% for tag in tags %}
-        <li id="tag-{{ tag.id|e }}"><a href="{{ path('tag_entries', {'slug': tag.slug}) }}">{{tag.label}} ({{ tag.entries.getValues | length }})</a></li>
+        <li id="tag-{{ tag.id|e }}"><a href="{{ path('tag_entries', {'slug': tag.slug}) }}">{{tag.label}} ({{ tag.nbEntries | length }})</a></li>
     {% endfor %}
     </ul>
 

src/Wallabag/CoreBundle/Resources/views/themes/material/Tag/tags.html.twig

@@ -6,12 +6,19 @@
     <div class="results clearfix">
         <div class="nb-results left">{{ 'tag.list.number_on_the_page'|transchoice(tags|length) }}</div>
     </div>
+
     <br />
-    <ul class="row data">
-    {% for tag in tags %}
-        <li id="tag-{{ tag.id|e }}" class="col l4 m6 s12"><a href="{{ path('tag_entries', {'slug': tag.slug}) }}">{{tag.label}} ({{ tag.entries.getValues | length }})</a></li>
-    {% endfor %}
-    </ul>
+
+    <div class="row">
+        <ul class="card-tag-labels">
+            {% for tag in tags %}
+                <li title="{{tag.label}} ({{ tag.nbEntries }})" id="tag-{{ tag.id }}" class="col l2 m2 s2">
+                    <a href="{{ path('tag_entries', {'slug': tag.slug}) }}">{{tag.label}} ({{ tag.nbEntries }})</a>
+                </li>
+            {% endfor %}
+        </ul>
+    </div>
+
     <div>
         <a href="{{ path('untagged') }}">{{ 'tag.list.see_untagged_entries'|trans }}</a>
     </div>