Trebuchet: change defaults to false

When people just want to hide some app icons from the drawer
and backout of settings without checking these other options,
their homescreen will change unexpectedly as well

Change-Id: If10e14514bf7606617bc51360da43d752f1a4ce9
(cherry picked from commit dcbd1c41eec21fca93eb95f769b8a9722e0379a6)
Trebuchet: add lockscreen wallpaper picker

Change-Id: Ic4f2589924a3c61b676db907f08108286dc45c29
Signed-off-by: Roman Birg <roman@cyngn.com>
(cherry picked from commit 29c2da02bf48fbdba977bc774027e218487e1abe)
Cleaning up references to mDragView after reordering Workspaces

Change-Id: I480142b4714034c5579232a6a0d30f3aecb687ac
(cherry picked from commit 7e0e4fa1b8eb64f71893005f521fc9a27f421944)
Fix NPE if a moved cell does not have a parent

This NPE should actually never happen. It did however and crashed
Trebuchet.
Symptom that will lead to this NPE: Drag Shortcut from homescreen
to somewhere else. Old icon will not get removed while dragging.
This should also be fixed!

Change-Id: I5b5070c93077e69f0f63a26d337fb9aee83ec6d2
(cherry picked from commit d027815092005de1a63d24ab0c06ea0f982b9843)