Factory reset: Always show the "delete media" checkbox

CM is usually installed with recoveries that preserve datamedia,
including our own, so the assumption that deleting data will also
clear personal media is wrong. Always show the checkbox that was
originally limited to removable media to let the user do a full
reset

Change-Id: I2764c9509cc9ec50a1be979d748341037660a5da
SECURITY: Don't pass a usable Pending Intent to 3rd parties.

Unfortunately the Settings app has super powers. We shouldn't let
untrusted 3rd party authenticators re-purpose those powers to their own
nefarious ends.  This means that we shouldn't pass along PendingIntents
that can have addressing information (component, action, category)
filled in by third parties.

Bug: 17356824
Change-Id: I397d26c5f465ddfb0e58bbc66cd44756e58cc507
(cherry picked from commit f5d3e74ecc2b973941d8adbe40c6b23094b5abb7)
Launch theme chooser that supports cyngn.intent.category.APP_THEMES

If we receive an ActivityNotFound exception we will simply show
the theme settings fragment.

Change-Id: I38bf6857125cdeda310e3bb5614fd6adaba8265f

Conflicts:
	src/com/android/settings/Settings.java
UsbSettings: Fix UMS mode

Change-Id: I5ccfcaf945bb4de929f007956dafcc551999739d