Update string.xml

Adding missing translation & code cleaning (making it more readable).
'incompatible_launcher_message' not translated yet..
Update play_store_listing.txt
Update play_store_listing.txt
Update play_store_listing.txt
Update play_store_listing.txt
Merge pull request #199 from siiie/patch-1

Update string.xml
Merge pull request #202 from adrianis86/master

RO update
Uodate translations (AF, RO and SL)
New strings
Merge pull request #33 from DvTonder/master

merge
Merge pull request #15 from DvTonder/master

Update source
IT translation: New strings
Update Notifications strings
Merge remote-tracking branch 'upstream/master'
IT translation: Update Notifications strings
Merge pull request #203 from NetBender/master

IT translation: Update Notifications strings
Update strings
IT translation: Update strings
Merge pull request #204 from NetBender/master

IT translation: Update strings
Update strings.xml