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
Status bar date/time actions

Separate clickable actions for time and date statusbar pulldown
    * Click the time to open Alarm
    * Click the date opens Calendar

Original commit - https://github.com/omnirom/android_frameworks_base/commit/dd045bb093809196ab2df6954eda1c27cb28facf

Change-Id: I2a476d778dc49d3543292865c38f20dcb242d3df

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java