rewrote betting round incl, raise allin
hopefully fixed both, pot and betting round
changed card representation from 2s3s4s...Ah to 2s2c2h2d...Ad, [0..51]
value = card / 4
suit = card % 4
added ready question before each round (45s timeout)
changed starting chips to 2000 to avoid overflows...
changed position of ready question
only asking players left if ready
Merge branch 'develop'

changed card representation
added ready question