Renamed SUBS command to LSUB and changed its parameters. Subscription Type no longer...

Renamed SUBS command to LSUB and changed its parameters.  Subscription Type no longer applies because it never worked right anyway.  There will now be only one variety of list subscription, and you will like it.  Am I making myself clear?  Also updated the version of citadel/libcitadel/webcit to 931 across the board, because we changed everything.