[Fix] Filter Active Users (#314) (#329)

Adding users to a group or setting permissions on a package now filter for active users. Also any inactive members of group/package get marked as such.

<img width="490" alt="{3B906C71-F3AE-41E4-A61C-B8377D79F685}.png" src="attachments/09cf149a-9d7a-4560-8ce7-9f3487527ee2">

Reviewed-on: enviPath/enviPy#329
Co-authored-by: Liam Brydon <lbry121@aucklanduni.ac.nz>
Co-committed-by: Liam Brydon <lbry121@aucklanduni.ac.nz>

templates/objects/group.html

@@ -57,7 +57,8 @@
           {% for um in group.user_member.all %}
             <li>
               <a href="{{ um.url }}" class="hover:bg-base-300"
-                >{{ um.username }}</a
+                >{{ um.username }}
+                {% if not um.is_active %}<i>(inactive)</i>{% endif %}</a
               >
             </li>
           {% endfor %}