settings: Remove "mobile plan"

 * Useless menu item.

Change-Id: I0b35017cb9a52600cde5d31065f007210f916a41
Settings: Slimrecents card/text color [1/2]

Allows user to set custom colors for Slimrecents card
    header text and background.

PS: fix strings

PS: move recent preferences into separate
        subcategory under Interface settings (squashed).
Change-Id: I6cd62c14f0d2b1aba54efa7dfa0c8a3db7669a9e

Conflicts:
	res/xml/accessibility_settings.xml
	src/com/android/settings/accessibility/AccessibilitySettings.java