Add platform stats to user page

Re-add user gravatars
Some error catching
Some code clean-up

data/interfaces/default/user_recently_watched.html

@@ -32,5 +32,5 @@
         </ul>
     </div>
 % else:
-    <div class="muted">There was an error retrieving some data. Please check your <a href="config">settings</a>.</div><br>
+    <div class="muted">There was an error loading your PlexWatch data. Please check your <a href="config">settings</a>.</div><br>
 % endif