Externalize symbol picker options to resources

Having the symbol picker options in resources allows a change to be made for
a specific device, and even for a specific locale (change in overlay).

Ported from cm10.2: http://review.cyanogenmod.org/32581

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: I72ff6fab6b9c14f9761904fdcc6918784d790d4d

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