InCallUI: non intrusive incall ui rework

Use glow pad with accept and reject target
Added button to open fullscreen ui

PS8:
-simple flat style again

PS9: added some bells and whistles
-added hide animation
-added background button
-added swipe down to background

PS10;
-added button pressed feedback

Change-Id: I12ea058ed970b13608c5abfa8c0cd535dfc621ae
InCallUI: ES translation

Change-Id: Ie71ad10e3af02b4f713030ef6c8c39eaaf9606a7