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
InCallUI: non intrusive incall ui: fix glow pad layout

Change-Id: I8350e59ee7fba6e8ec2e0a06f3617060c5c204f0
Merge pull request #4 from omnirom/android-4.4

sync