Rewriting clean versioned API url

* Using the same version tag as in _mf-geoadmin3_ , i.e. `date '+%s'` (hex are not cached by apache)
* Removing the pesky *wsgi* from pathes
Instead of LocationMatch, we could probably even use 'directory' directive (and taking the directory from above). So we are on the sure side.

Thing is, according to doc, Alias/WSGIScriptAlias is first match wins. LocationMatch, last one wins.