Honor the Check for Updates config.

src/config.coffee

@@ -11,7 +11,7 @@ Config =
       'Comment Expansion':            [true,  'Add buttons to expand too long comments.']
       'Thread Expansion':             [true,  'Add buttons to expand threads.']
       'Index Navigation':             [false, 'Add buttons to navigate between threads.']
-      'Check for Updates':            [true,  'Check for updated versions of <%= meta.name %>.']
+      'Check for Updates':            [true,  'Notify when updated versions of <%= meta.name %> are available.']
     'Filtering':
       'Anonymize':                    [false, 'Make everyone Anonymous.']
       'Filter':                       [true,  'Self-moderation placebo.']

src/main.coffee

@@ -495,7 +495,7 @@ Main =
     Klass::callbacks.push obj.callback
 
   checkUpdate: ->
-    return unless Main.isThisPageLegit()
+    return unless Conf['Check for Updates'] and Main.isThisPageLegit()
     # Check for updates after:
     #  - 6 hours since the last update on Opera because it lacks auto-updating.
     #  - 7 days since the last update on Chrome/Firefox.