galaxys2-common: update overlays

Change-Id: Iaf9b864771501536981577e6ca805bfee9cdabac
Optimized all png's.

Change-Id: I6b9a374b08a567e92c024df8d16844e7859f8cf7
to: optipng -nc -nb -o7
wifi.supplicant_scan_interval: 15 -> 30

Change-Id: I93a160e02367ec936980751846338e3fe281fcf6
Stweaks Support

Change-Id: I5ea72126ba84a2e2346fcbeb55ece5117ea1fdc7
4.4 bringup

Change-Id: Ic92e14fe4d76e04c09d98a218d5b8d1c94282671
galaxys2: enable swipe controls in recovery

Change-Id: I43a2480f2de376113d0b73340967dcc3fb1173df
galaxys2: odex system

Change-Id: I8bc36e5a2bb1b7282e7ae9ad38f0a8126138e36c
galaxys2: fix external sdcard mountpoint

Change-Id: Ic084ca17f7bda633df4cc1802e534e5ef1e2a937
init.rc: 4.4.1 bringup

Change-Id: I0d2a64fd335bd3eafd382677596e79178e624c21
Fix build

Change-Id: If317317f8dcaee2f3e81becdc6cb23a50b86229c