Frameworks/SystemUI: Update Greek translations

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: I25186850f606ae32474f75f7149a7ad3dd0d93bf
Merge "Frameworks/SystemUI: Update Greek translations" into gingerbread
Merge remote-tracking branch 'cm/gingerbread' into gingerbread