share: Switch to using bluetooth; backend services done.
config: Change NFC permissions to bluetooth.
config: Added SelectDeviceActivity to manifest.
config: Added permission bluetooth_admin for discovery.
share: Modified share package to use bluetooth.
ui: Added string value for bluetooth device selection.
ui: Added layout for bluetooth device selection.
config: Remove SelectDeviceActivity from manifest.
ui: Improved compact ui for KeyShare.
share: Merged device selection activity into KeyShare.
share: Modified loop condition; successful key exchange.
ui: Modified keyexchange string to mention image.
share: Key confirmation now uses rudimentary image for authentication.
share: Added break statements to handler switch, fixes toasts.
config: Updated readme to reflect bluetooth.
share: Trimmed buffer size in bluetooth listener.
share: Unregister bluetooth device receiver; reuse buffer for allocating image.
share: Improved key authentication dialog: image and accept timer.
share: Remove unneeded SelectDeviceActivity- integrated with KeyShare.
Merge branch 'bluetooth_ui'