Fix bug where user refresh would fail under certain circumstances.

Move all user functions to it's own class.

data/interfaces/default/edit_user.html

@@ -44,7 +44,7 @@ DOCUMENTATION :: END
                             <input type="text" class="form-control" id="profile_url" name="profile_url" value="${data['thumb']}">
                         </div>
                     </div>
-                    <p class="help-block">Change the users profile picture in PlexPy.</p>
+                    <p class="help-block">Change the users profile picture in PlexPy. To reset to default, leave this field empty and save then perform a user refresh.</p>
                 </div>
                 <div class="checkbox">
                     <label>