Fix shadow values

Must be a floating point value (Documentation)
Transparent drawable

Use xml instead of 1px png file
Merge pull request #16 from mudar/kwamecorp-original

Thanks for this improvement.
Merge pull request #18 from sevan6/master

Fix for bug#17 Wrong French translation for AppLauncher Widget

Thanks for improving the French texts!
French messages improvement proposal for FairphoneUpdater