Settings: Add Permissions Management to AOKP [1/4]

So that user can easily access the Permissions Management app via settings.

Change-Id: I4f30389c3f8c9f05c0279c60ed819a65aa0d69df
Signed-off-by: Rohan Mathur <rohanmathur34@gmail.com>

Conflicts:
	res/values/strings.xml
	res/xml/settings_headers.xml

 Author:    0xD34D <clark@scheffsblend.com>
 Changes to be committed:
	new file:   res/drawable-hdpi/ic_settings_permissions.png
	new file:   res/drawable-mdpi/ic_settings_permissions.png
	new file:   res/drawable-xhdpi/ic_settings_permissions.png
	modified:   res/values/strings.xml
	modified:   res/xml/settings_headers.xml