Fixes some minor bugs :

Fixes a problem when sharing folders in the activity stream
Improves translation by better localizing javascript files
Fixes a notice error in the BuddyDrive Administration
Fixes a notice error in case the file does not exist anymore

git-svn-id: https://plugins.svn.wordpress.org/buddydrive/trunk@976073 b8457f37-d9ea-0310-8a92-e5e31aec5664