Enable namedGroups in regjsparser

[kapouer]

Address #249.
Maybe more work is needed ? It's a necessary first step anyway.

[tjenkinson]

Thanks but more work is needed to actually handle the named groups

[kapouer]

Maybe not all work, but at least I could get some feedback about

/^(?:(?<tenant>[a-z0-9]+)-)?(?<id>[a-z0-9]+)(?<domain>\.[a-z0-9]+\.[a-z]+)$/

which is fixed by

/^(?:(?<tenant>[a-z0-9]{1,16})-)?(?<id>[a-z0-9]{1,32})(?<domain>\.[a-z0-9]+\.[a-z]+)$/