use only librfid reader for patron cards
Merge branch 'master' of mjesec.ffzg.hr:/git/Biblio-RFID

Conflicts:
	examples/selfcheck.js
Merge branch 'master' of mjesec.ffzg.hr:/git/Biblio-RFID
make afi_retry configurable
support only afi change
new design, more clean
changed color output, beep stub
Merge branch 'master' of mjesec.ffzg.hr:/git/Biblio-RFID
implemented REST /beep
better messages both to patrons and to beep log