Settings: new dslv + Dialog handling

dslv get some tweeks to be perfect
- dialogs get instance handling
- icons show all in same size independent which icons they are
- option "none" is on normal action not available and gets filtered

Other settings:
- clean up a bit
- use more centralized strings
- dialog get instance handling
- add missing landscape layout settings for color picker

Change-Id: Icc334b3f1940188492133ac50e04800ecb41d093

Conflicts:

	res/values/slim_strings.xml
	src/com/android/settings/temasek/dslv/ButtonsListViewSettings.java

Note to self:
Excludes res/layout-land/dialog_light_settings.xml
https://github.com/SlimRoms/packages_apps_Settings/blob/f4de69495b2309bc2b748a5d6a66a7211b4b8379/res/layout-land/dialog_light_settings.xml