Allow ui.xml to include additional xml files to read

Use common portrait and landscape xml files based on resolution
defined by the device.

Change-Id: Iec528f9d846d49857ff98de1ac201e25dbb60339
add 1440x2560 theme to TWRP

Change-Id: I9e54d2bcfe89e1e0e3205ce2f4156cfd22dca5b5
Merge remote branch 'omni/android-4.4' into android-4.4