update strings in battery settings(Round 1)

This cl updates the strings in several battery
settings pages and dialogs, also add footers
for battery manager page and restrict app page.

Update the strings in battery settings except:
1. Summary for smart battery toggle
2. "Full charge lasts"
3. Restrict dialog
4. App info page

Bug: 73018395
Test: RunSettingsRoboTests
Change-Id: I4955cc7c19b5f1df18f21cfb47e8859c997e19d1