Revert "trebuchet: remove CALL_PHONE permission"

This reverts commit 2168cc82e4c349d62db8476a914d80cd041a7d8c.
Direct call widget is broken.

Change-Id: I3e8fe0e0ff77cf0ccff17701b5f40f2a62ae8d3f
Trebuchet: Further adjustment of panel overview glitch fix

 * These values takes care of the glitch also on legacy
   480x800 devices.

Change-Id: Ia901699351ed887a9100bbec6d10be9e92b50c14
Fix:

 - For devices with HW menu button, pressing menu in app tray doesn't show overview settings panel.
 - When you click the widgets button from the expanded settings pane, the settings pane eats touch events even when the workspace goes back into normal mode.

Change-Id: Ibf5f22c969f257ece72474c6ce91d7896aaba158