sip_session: remove registration code

darcs-hash:20090326101832-b2873-f76b54f6de83e9aa8b18d664e016880a3dc7b26d
clients.console: use callFromAnyThread

- this should fix the bug when the messages printed in other threads are delayed

darcs-hash:20090326104836-b2873-d99e9dd40cd392ae44dfb3bc9d5d87051be03c4a