Functions, Apps, and Artistry

Functions, Apps, and Artistry

 - Added Device functions which are accessible as app shortcuts
   - "App Switch" opens the Android app switcher (Shield only)
   - "Find My Remote" causes a compatible physical Shield remote to beep
   - "Reboot" reboots your Android/Fire device

 - Added Apps
   - Google App Store (Shield only)

 - Added Artistry
   - Many app shortcut buttons now include SVG icons!
   - Minor code changes to adjust the visual layout of shortcut buttons