Fixes for Chrome clients of webclient.
Fixes for Chrome clients of webclient.

webclient.py now maintains a mapping of suid->single request as opposed to a mapp of
suid->list of requests. Since the evennia_webclient.js client only has one valid
request outstanding at all times, this should be safe.

google-code-export/evennia,tectronics/evennia,tectronics/evennia,google-code-export/evennia,tectronics/evennia,google-code-export/evennia