[REMOVE] remove some deprecated retrieve-time settings
[MODIFY] use Date.now in send_queue.js
[ADD] add support for media/upload in twitter_lib.js
[FIX] unnecessary event handler when notifications is disabled
[MODIFY] fixup options.html
[MOIDFY] fixup ajaxRequest in twitter_lib.js
[FIX] unwork some UserActionMenu items
Version 0.5.4.15