Modified change log contents and name

Change-Id: Icd5d8eebe9ec69141cb719f89465dc59d2949285
Ignore the "hosts" file as it is now part of the get-prebuilts script.

Change-Id: I72e367b5b2fb93889b2e6b1d482f8b651da4f784
Proprietary cleanup & updated get-prebuilts

Removed BetterBatteryStats and AdAway from proprietary installs.
Updated the get-prebuilts script to pull the latest ApexLauncher and
TitaniumBackup from the device. Also replaced AdAway by pulling the
lastest "hosts" from from http://winhelp2002.mvps.org/hosts.txt

Change-Id: I2269a5c95f2709d55aa36a5f4765e1e51d388859