Merge pull request #179 from tawarisch/master

Android: use gradients as graphical script representation
- removed fragment_scripting and SetGradientFragment
- moved add script button into actionbar
- moved most buttons into action bar
open issues:
- edit command activity
fix bug with WlanConfigDialog
round corners for edit command activity
Merge branch 'dev' into android-app
added missing android resource files
clean up