Bump dependencies. Some parts needed to be deactivated for that. They need to be reimplemented.

- breadcrumbs (!flask-breadcrumbs)
- manual modal button
- api blueprint (!flask-marshmallow/!marshmallow-sqlalchemy)

app/templates/_base/sidenav.html.j2

@@ -6,9 +6,6 @@
         </a>
       </div>
   </li>
-  <li class="primary-variant-color center-align hide-on-small-only" style="padding-top: 8px; height:48px;">
-    <img src="{{ url_for('static', filename='images/nopaque_slogan_transparent.png') }}" style="width:85%">
-  </li>
   <li class="hide-on-med-and-up"><a class="waves-effect" href="{{ url_for('main.index') }}"><i class="material-icons left">home</i>nopaque</a></li>
   <li>
     <a class="waves-effect" href="{{ url_for('main.news') }}"><i class="material-icons left">email</i>News</a>
@@ -73,9 +70,9 @@
     <a class="waves-effect" href="{{ url_for('admin.admin') }}"><i class="material-icons">admin_panel_settings</i>Administration</a>
   </li>
   {% endif %}
-  {% if current_user.can('USE_API') %}
+  {# {% if current_user.can('USE_API') %}
   <li>
     <a class="waves-effect" href="{{ url_for('apifairy.docs') }}"><i class="material-icons">api</i>API</a>
   </li>
-  {% endif %}
+  {% endif %} #}
 </ul>