Small code style fix.
Tidied.
Wording improvement, thanks to Shawn.
Make sure toolbar modules get updated with new icon settings.
Reduced index length to work ok on mysql 5.6.
Fixed broken stylesheet URL in case of using treeview.
Fixed a bug where session storage in DB fails on MySQL 5.6.
Code cleanup.
Improved usability: only show queues with tickets.
backup script doesn\' work if we only want to keep today\'s backup (option "-r 0"). Cyrille
Fixed background gradient issue.
backup script doesn\' work if we only want to keep today\'s backup (option "-r 0"). Cyrille
Merge branch 'fix-backup' of http://github.com/belnet-ict/otrs into fix-backup

Conflicts:
	scripts/backup.pl
Synchronized translation files.
Prepare for release.
Fixed changes line.
Merge branch 'fix-backup' of https://github.com/belnet-ict/otrs
Typo: vaild -> valid.
Reformatted obsolete usage of "( ?" to remove warning in perl 5.18.
Removed uppercase navigation font to save space.