[pydotorg-www] Tighten up Jython wiki settings a bit?

[skip at pobox.com]

The Jython wiki seems to get spammed at a low, but fairly constant rate:

    http://wiki.python.org/jython/RecentChanges?max_days=14

Andrew obligingly deletes the offending pages.  They seem to all be created
by logged in users whose names match the pages they create, so I'm confident
we are dealing with a bot.  Can we enable the TextCha capability for that
wiki?

Thx,

Skip