Misc layout fixes

- Apply entity header effect to battery summary screen.
- BidiWrap wifi ap name is it's correctly displayed in RLT languages
- Remove footer preference layout - settingslib already has one

Fix: 62039146
Fix: 62138362
Fix: 37920219
Test: make RunSettingsRoboTests

Change-Id: Idf1385ee40772c63075e5f81eb039c6da56256ab