update versioning.xml documentation

[dizzzz]

current docs describe the html admin interface to view the versioning info;

in exist-2.2 ( eXist-db/exist#337 eXist-db/dashboard#23 ) the admin interface has been removed...

[joewiz]

According to @adamretter on exist-open:

The versioning module was removed a couple of years ago. We did this
because it was using GPLv1 code, and this caused licensing problems
when including it in the source base of eXist-db.

The code was "temporarily" moved to
https://bitbucket.org/zwobit/versioning but then sadly forgotten.

I have taken a couple of hours today to clean up that code and make it
compatible with eXist 3.0 and added the ability to produce an EXPath
Package (.xar) file. I have now republished the updated code here:
https://github.com/eXist-db/xquery-versioning-module

I have also made a binary available for you here:
http://static.adamretter.org.uk/xquery-versioning-module-1.0.xar

I am no legal expert, and this is not in any way meant as advice: From
my understanding I think that if you use that GPLv1 code as a module
(i.e. the .xar) which is loaded dynamically at runtime, then you might
not fall foul of the GPLv1 license terms (if that is an issue for
you). However the legality of use is really for you to check.
...
I have now also uploaded this to eXist's public package repo, so it
should show up in the Package Manager too.

Confirmed:

http://exist-db.org/exist/apps/public-repo/packages/xquery-versioning-module.html?eXist-db-min-version=3.0.0

[duncdrum]

and yes the admin interface is still there

[duncdrum]

@dizzzz the admin interface is no more, good to close?

[duncdrum]

if the admin interface makes an unexpected reappearance please open a new issue, thanks for the report