Fix styles for custom functions with custom types in Firefox 29.0a1
Fix hack for async AddonManager
Looks like not updated obsolete implementation...
Anyway, it's better to have working version to restore it, if something went wrong.
(related to #6)
Use nsIXULChromeRegistry.getSelectedLocale() trick to detect available extensions
(#6)
Drop "handyClicksExtensionsHelper" API
(#6)