[Zope] Solution to force authentication (was: getting index_html instead of manage_main in some browsers)

[Dominique.Dutoit@cec.eu.int]

Some browsers (OmniWeb, iCab) don't preemptively send the authorization
header and so they are authenticated as an anonymous user in the ZMI. The
result is that the ZMI frames are displayed but the file manager is not. But
I've found a way in Zope 2.4 to ask the browser to send the authorization
header.

Just edit line 139 of App/Management.py from
manage_workspace__roles__=('Anonymous',) to
manage_workspace__roles__=('Authenticated',).

I don't know if there's any issue by changing this line...