Settings: do not crash if development app is not installed

Change-Id: If136b509e8727399b1dcfa42ce5b4043612f868f
Revert "Settings:  allow device trees to invoke custom display settings"

This reverts commit 460bab8b5295efd000ec243c631d1fad9256b9ae.
dashboard: create gesture entry

credits to Evisceration from namelessrom for the drawables and commit.