More security on lockscreen

Disable Shutdown, Restet, Airplane mode when device is secure locked.

Also fake shutdown on secure lock.
DocumentsUI: Allow open files instead of URIs

Check files' real path and mime type to open them only in standalone mode.
This allows, for example, installing apks.

Change-Id: I4501c694db84b8595cd3928752254a8914539972
Enable IME QuickToggle
Audio Record im QS

Based on SlimRoms implementation
Move IME Tile higher

before Alarm Tile