Move the '{create,import} version' buttons to the webapp details page

(this is to avoid discarding changes in the form if the user follows
one of these links)

django/allgo/templates/webapp_add_update.html

@@ -27,13 +27,6 @@
         <ul class="nav nav-tabs">
           <li class="nav-item"><a class="nav-link active" data-toggle="tab" href="#basic">Basic</a></li>
           <li class="nav-item"><a class="nav-link" data-toggle="tab" href="#advanced"><i class="fas fa-cogs"></i> Advanced</a></li>
-          {% url 'main:webapp_creation' as webapp_url %}
-          {% if request.get_full_path != webapp_url %}
-          <li class="nav-item"><a class="nav-link" href="{% url 'main:webapp_sandbox_panel' webapp.docker_name %}"><i class="fas fa-code-branch"></i> New version</a></li>
-          {% if webapp.imported %}
-          <li class="nav-item"><a class="nav-link" href="{% url 'main:webapp_version_import' webapp.docker_name %}"><i class="fas fa-cloud-download-alt"></i> New version</a></li>
-          {% endif %}
-          {% endif %}
         </ul>
 
         <p class="mt-3">You can create a new application here by giving a name.</p>

django/allgo/templates/webapp_detail.html

@@ -27,11 +27,33 @@
             href="{% url 'main:webapp_update' webapp.docker_name %}"
             data-toggle="tooltip"
             data-placement="top"
-            title="Update the application">
+            title="Edit properties">
             <i class="fas fa-square"></i>
             <i class="fa-inverse fas fa-pencil-alt" data-fa-transform="shrink-7 down-.25 left-.25"></i>
-            <span class="text-hide">Update the application</span>
+            <span class="text-hide">Edit properties</span>
           </a>
+
+          <a class="fa-layers fa-2x"
+            href="{% url 'main:webapp_sandbox_panel' webapp.docker_name %}"
+            data-toggle="tooltip"
+            data-placement="top"
+            title="Create new version">
+            <i class="fas fa-square"></i>
+            <i class="fa-inverse fas fa-plus" data-fa-transform="shrink-7 down-.25 left-.25"></i>
+            <span class="text-hide">Create a new version</span>
+          </a>
+
+          {% if webapp.imported %}
+          <a class="fa-layers fa-2x"
+            href="{% url 'main:webapp_version_import' webapp.docker_name %}"
+            data-toggle="tooltip"
+            data-placement="top"
+            title="Import version">
+            <i class="fas fa-square"></i>
+            <i class="fa-inverse fas fa-cloud-download-alt" data-fa-transform="shrink-7 down-.25 left-2"></i>
+            <span class="text-hide">Import version</span>
+          </a>
+          {% endif %}
           {% endif %}
       </div>
     </div>