[CHG] in preferences use manager instead of editor

Properly refreshes the preferences UI, For more information:
http://stackoverflow.com/questions/8003098/how-do-you-refresh-preferenceactivity-to-show-changes-in-the-settings
[FIX] spaces>tabs code style fix
Merge branch 'master' into urluploadsupport
[FIX] implemented a dirty workaround for google's retardo
DocumentProvider API ...