Release new version 2.12

+2.12: Fixed an issue with the back button in Safari & YouTube. (#350)
+      Fixed an issue in the Chrome Beta version if the report an issue link in the popup menu. (#347)
+      In Chrome, improved the cleanup of old data when tabs are closed.(#345)
+      Fixed an issue with Whitelist wizard not being displayed on certain sites. (#341)
+      Fixed an issue with the AdBlock icon in Safari 5.0 (#342)
+      Added a work around to a Chrome bug for incorrectly reporting the type of a URL request. ((#339)
+      On the AdBlock options page, Filter Lists tab, add the title of custom filters lists the users is subscribed to (if there is a title for the filter list). (##336)
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