Cleanup battery style code

* Cleanup commented out code
* Fix landscape battery icon padding
* Fix landscape battery icon charging indicator
* Fix landscape battery icon percentage indicator
* Fix circle battery frame color on some black backgrounds
* Fix circle battery artifact on low percentage
* Fix percentage not shown while charging
* Fix percentage always showing on expanded status bar
* Fix battery icon showing after reboot on text/hidden modes

Change-Id: Ic56878c26e9a3416149eaaa8a9325d56d664e22e