Added lost-device icon and action, added background to buttons.
Overflow reveal is now animated inside the card.
Bind connect and disconnect actions to device-icon (short press to connect/launch default activity; long press to disconnect).
- disconnect by long-pressing device icon (temporary)
- use level-list to show battery level + charging
- remove padding around cards list
- use style colors for action icons (supports dark theme)
- add secondary text to the themes, even though the color is the same
- replace the info icon with three vertical dots