bugfixes

improved dark mode user pref
Fixed invalid default Group
Fixed subscriptions showing when plugin was disabled
Fixed messages and notifications showing when disabled

app/plugins/messages/views/index.html

@@ -0,0 +1,8 @@
+<div class="context-main context-main-bg col-10 offset-1 my-3 p-3">
+    <div class="my-3 p-3">
+        {message_inbox}
+    </div>
+    <div class="my-3 p-3">
+        {message_outbox}
+    </div>
+</div>