mangle.Id should restrict Ids they way the 'add' screen describes it.

[Andy Altepeter]

The add screen says no spaces are allowed, but mangle.Id._valid_id (even in
trunk) allows spaces so long as they aren't the first character.

I've applied this change to the Silva trunk, but it should probably be
backported to the other Silva releases (1.6, 1.5.10, other?)

[Eric Casteleijn (thisfred)]

Trunk is still 1.6, so we only need to port it back to 1.5. I'll do
that. Thanks Andy. Allowing the spaces *was* a conscious decision at the
time, I believe, when Zope started allowing them in ids. I just believe
it was a very bad decision....

[Eric Casteleijn (thisfred)]

Actually, since the entire 1.5 branch has had this, maybe people are
relying on it. So I won't back port. I do have to look into an upgrade
script for 1.6.

[Kit Blake (kitblake)]

Thisfred, this is still a todo, right? Assigning to you, for after the final.

You need to do something with upgrade and/or the import? People will import
content from 1.5, with spaces, to 1.6.

[Eric Casteleijn (thisfred)]

No, this has been done for 1.6, and we won't do it for 1.5. I'll have one last
test with importing 1.5 documentation into 1.6.

[Eric Casteleijn (thisfred)]

This works just fine. Capitals are still allowed, which I'm not too happy about,
but then they aren't mentioned in the add screen.