doc: removed line referencing API change in 1.6 Removed sentence: This may be fixed in Roundup 1.6 by introducing ``init_web(client)`` callback or a more flexible extension point mechanism. as I think RegisterAction can be used for both cgi/html interface (action inherits from roundup.cgi.actions.Action) and rest/xmlrpc interface (action inherits from roundup.actions.Action).