vanir_inverted: some updated definitions

moved the menu definitions back to drawables for better
visibility
slowly introduce xxhdpi drawables

Credits for the drawables go to SlimRoms and TeamBaked

PS3: add some borders to dialogs too
PS7: switched to slimroms drawables for consistency

Change-Id: I3818e235da8ce1e42a24f58f3346452ea27d1666
Signed-off-by: Dan Trifan <jimsth@gmail.com>
Merge "vanir_inverted: some updated definitions" into kk44