Android Beam Support

I've implemented Android Beam support (NFC) for sharing anime/manga between two devices.
Basically this just sends a simple string containing recordType and recordID to the other device, which then loads the data (just calls getDetails() after setting recordType/-ID), see setupBeam() and processIntent() in DetailsView.
Second part is the NfcHelper class which contains the static function disableBeam(), which is used to prevent displaying "touch to beam" for all other activities, as they don't have any data to share.

If the app is not installed on the target device then the play store is opened, presenting Atarashii for installation.

Edit: Don't know why the merge commit is there, branch should start after this commit -.-