remove capture mode for now
Camera: Set the width dynamic to parent from fixed 400px

Width of the seekbar was 400px and that caused overflow for
the rightmost text value.

Set the width match_parent so that it'll change dynmaically
with the text window.

Change-Id: I51069d4c5687e72516bc4a5afc59f9f3ae6f8e88
CRs-fixed: 582325
Camera: Overrides the focus mode for ZSL

 - This modification will override the currently
  configured focus mode to CAF( if supported ) in
  case we switch to ZSL mode. In addition to that
  the client will not be able to change the focus
  mode once ZSL is active.
- TouchAF will be available in ZSL mode if supported.
- Moves focus option to the rest of the 3A modes.

Change-Id: I4a2ab7d6013c26365cf46e7b3c5d2d0d3afd574e
CRs-fixed: 522500,528835,585670