remove releasetools!

we are ready for a bigger ROM, thanks to aw3som3
remove omni.dependencies
remove libwebcore building in full_pico.mk

this is taken care of by frameworks/webview
skip building chromium_org
remove releasetools defines
set REFRESH_RATE to 60
use QCOM_BSP
remove TARGET_RUNNING_WITHOUT_SYNC_FRAMEWORK
inherit all locales
sd-ext by default!
add patches dir
try fixing backlights in omni

Change-Id: Ie98b3721250654a1293a30f2ce5686f48297b28f
twrp.fstab: help unify recovery building with device building