Fix a few parts of Touchstone Settings. #17

- Increase username and password field font size.
- Indent username and password fields more on iOS 7.
- Make “Log Out…” cell non-selectable when disabled.
- Bring back blue highlight for Log Out button on iOS 6.
Update Touchstone Login screen for iOS 7. #17
Update Emergency root screen for iOS 7. #9

- Update background color.
- Tweak padding of alert cell.
- Switch to a standard UITableViewCellStyleSubtitle cell for displaying contacts.
- Fix row heights.
Update Emergency Contact list for iOS 7. #9

- Switch to standard UITableViewCellStyleSubtitle, away from MITMultilineTableViewCell.
- Use same non-parenthesized phone number style in subtitles as Emergency root screen.