Fix the icon size in app lists.

E.g. the "Select app" dialog in the profile group configuration uses
this layout to inflate the list dialog. However app icons can have
non-standard sizes so we enforce a consistent width and height.

Change-Id: I71731a9bb3548c699cc2e0e600a5ff371ceacbc3
Bleed keyguard widget picker list into translucent bars
AppOps/Privacy Guard: Fix up misaligned switches.

Change-Id: Ic9e1e09ac911e552599f7bca6fb71b2808548f1d
Improve app op details layout.

Change-Id: I38a2c3679633ae85aec61703ab933410775bb336

Conflicts:
	res/layout/app_ops_details.xml