Fixing various QuickSettings issues (Bug 7210343, Bug 7174839, Bug 7174738)

- Using startActivityFromUser() for multiuser settings intents
- Show Wifi/Bluetooth Off labels when they are off
- Removing quotes from SSID name
- Only showing the IME tile under the same conditions that the notification is showing
- Making tile labels uppercase

Change-Id: Ic4a085cda600da019eab259b22c9041d1a0b5d29