Translations:MediaWiki 1.21/wmf11/5/en

Breaking changes

 * - Remove DB2 support (it has been unmaintained for a while)
 * - Removed the jquery.collapsibleTabs module and moved it to the Vector extension. It was entirely Vector-extension-specific, deeply interconnected with the extension, and this functionality really belongs to the extension instead of the skin anyway. In the unlikely case you were using it, you have to either copy it to your extension, or install the Vector extension (and possibly disable its features using config settings if you don't want them).