Settings: Set some more strings to translatable="false"

Change-Id: I7483044aa396b3c18b2cabf5715dea41ec44ca5b
Settings: Performance: Remove orphan dihering strings

Change-Id: I8975f029848f072e843b582d5852c11ddd1966b5
Display Settings: Better font size control

Use a SeekBar instead of a list/spinner to determine the font scaling.
For consistency, an approximate size (small, normal, etc.)
 and the exact percentage are displayed.
Show a preview of the selected font size immediately

Ported from CM 10.2, squashed commits 46678 and 49167.
Credit to Veeti Paaananen for the latter commit.

Change-Id: I754d7fdcaf27c23dfccf9d56291956e70b23f63e
Merge branch 'cm-11.0' of git://github.com/CyanogenMod/android_packages_apps_Settings into cm-11.0

Conflicts:
	res/values/cm_strings.xml
settings: add big menu support back
some in our team as well user want it urgently so we do it for
now till new Slim recents is back then we handle it so or so in
another way and do not need the recents button anymore and can
use the big menu button as permanent and get rid off the smal
3dot completly,

Change-Id: I98bc1f0814398af5d7a5d26c28f7edce1c598957