HALO support

Conflicts:
	res/values/strings.xml
Fix adding lockscreen targets.

The empty targets were not included in the setting properly.
Also make the code a little more memory efficient.

Change-Id: I05cc7ce55ef5789f063033116ebfd9337e5ee28a
Add Halo colors.

Conflicts:
	src/com/crom/settings/fragments/Halo.java