Revert "m7-common: remove Settings overlay"

This reverts commit 28493c92ece6092cb433ff099bbe98bd1f467574.
m7-common: enabled lockscreen translucent decor

Signed-off-by: Whitehawkx <xxwhitehawk@gmail.com>
m7-common: add some overlays back

Signed-off-by: Whitehawkx <xxwhitehawk@gmail.com>

Conflicts:
	overlay/frameworks/base/core/res/res/values/config.xml
m7-common: show overflow button by default

Change-Id: Id5f810bd284c283fdd592fb04eb6e6f60a256b48
Signed-off-by: Whitehawkx <xxwhitehawk@gmail.com>