1. Refine the battery header view
2. Move stats section to the place above power management
3. Add last full charge battery stat
4. Add the disclaimer as a footer
Also update the method name in test file, and this ui changes
also fix the header flash problem.
Bug: 36576021
Bug: 36494178
Test: RunSettingsRoboTests
Change-Id: I9784dbbbe16e61da7287f300183347dd4eee6a2b
edfd09d590