remove obsolete packets, refs #8191

Squashed commit of the following:

commit 25115325b9a113e6e4460db5fe7155ed995f99b0
Merge: 01aa608 b48d9f4
Author: Andor Goetzendorff <goetzend@cs.tum.edu>
Date:   Fri May 10 15:20:20 2013 +0200

    Merge branch 'master' into fb_8191_obsolete_packets

commit 01aa608c5fc49233031bf1ff156d4d0a0ce57ada
Author: Olaf Gladis <olaf@pokermania.de>
Date:   Thu Apr 11 11:04:03 2013 +0200

    removed PokerImageUpload

commit bae8ad0ceecd980aa5ba667acea009bfa61d6140
Author: Olaf Gladis <olaf@pokermania.de>
Date:   Thu Apr 11 10:39:20 2013 +0200

    people could not upload player images