Admin pages may now require JS.

[Gervase Markham]

The results of
https://bugzilla.mozilla.org/show_bug.cgi?id=284901
are in: admin pages may now require JS to function correctly.

In deference to scripting requirements, the submitted URL params should 
be simple, and ideally all the data should be present in the original 
page in case someone wants to parse it using an external script which 
doesn't have a JS engine.

Gerv