fix removing non-existing torrent file
Core dispersy initialization ported to twisted
Update dispersy ref
Port the search community to the new dispersy
Port privatesocial community to the new dispersy
Port privatesemantic community to the new dispersy
Port privatesearch community to the new dispersy
Port metadata community to the new dispersy
Port channel community to the new dispersy
Port bartercast3 community to the new dispersy
Port allchannel community to the new dispersy
Port the database stuff to the new dispersy
Port RemoteTorrentHandler to the new dispersy
Port the rest of tribler to use twisted away from the callback, mostly some
decorator replacement and twistification.