s3ve3g: General cleanup

-Remove useless ramdisk files
-Mount all partitions on fstab but forbid formatting them
-Introduce CM Power Profiles
-Alphabeticaly order services and cleanup in init.qcom.rc
s3ve3g: fix wifi passwords being reset after a reboot.

* Was used to fix the same issue on the Galaxy S5 and is also present in
stock version of this file for our device