Fix LIST handling and message parsing

* Always use simple LIST syntax if it succeeded once after a failed
complex query
* Reject asking for a LIST twice
* Quickly discard any ISUPPORT messages that don't contain things we
need to use
* Detect the server name and drop any messages from the server

modules/userinfo.py

@@ -7,7 +7,7 @@ from utils.logging.debug import debug
 from utils.parsing import parsen
 
 def getWhoSingle(name, query):
-    result = main.r.sscan("live.who."+name, 0, query, count=-1)
+    result = main.r.sscan("live.who."+name, 0, query, count=999999)
     if result[1] == []:
         return None
     return (i.decode() for i in result[1])