added button to add a new drink
validate input from IntroActivity
Merge branch 'master' of github.com:fldpi/SoberApp
Merge branch 'master' of github.com:fldpi/SoberApp
open intent
catch back key
Merge branch 'master' of github.com:fldpi/SoberApp

Conflicts:
	SoberApp/app/src/main/res/layout/activity_main.xml