FreeOTP Android Beta

[Nathaniel McCallum]

CAUTION: FreeOTP has moved to a new token storage system internally.
This transition should be seamless. However, there is a risk this beta
application may eat your token data. Please back up your codes or have
another device handy before testing this application.

What's New:
 * Moving towards a Material Design UI, incl. image support
 * Support for opening token URIs from the browser
 * Support for provisioning a token image via QR code
 * Updated QR scanning code
 * Numerous bug fixes