base: Add blacklist provider permission

Change-Id: I4febc2c0aa1a690d607b2a459e2d60d30ecf5abf
JIRA: CYAN-3727
Issue: https://jira.cyanogenmod.org/browse/CYAN-3727
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>

Conflicts:
	core/res/res/values/cm_strings.xml