Fix tabs & improve topbar items

# Conflicts:
#	_includes/sidebar.html
#	_includes/topbar.html

_includes/sidebar.html

@@ -42,7 +42,7 @@
         <i class="fa-fw {{ tab.icon }} ml-xl-3 mr-xl-3 unloaded"></i>
         {% capture tab_name %}{{ tab.url | split: '/' }}{% endcapture %}
 
-        <span>{{ site.data.locales[site.lang].tabs.[tab_name] | default: tab_name | upcase }}</span>
+        <span>{{ site.data.locales[site.lang].tabs.[tab_name] | default: tab.title | upcase }}</span>
       </a>
     </li> <!-- .nav-item -->
     {% endfor %}

_includes/topbar.html

@@ -31,16 +31,12 @@
             <span>{{ page.title }}</span>
           {% endif %}
 
-        {% else %}
+        {% elsif page.layout == 'category' or page.layout == 'tag' %}
-
-          {% unless page.layout == 'post' %}
           <span>
             <a href="{{ item | relative_url }}">
               {{ site.data.locales[site.lang].tabs[item] | default: page.title }}
             </a>
           </span>
-          {% endunless %}
-
         {% endif %}
 
       {% endfor %}