Missing fields in metadata view

[joachimnielandt]

The following issue is a result of a check performed by @CMath04 during the last sprint. To be concluded / fixed, I'm creating a relevant issue to track progress whenever we can pick this up.

Missing fields from the metadata view. Likely some removal of VL
specific logic from the view.xsl which we didn’t offloaded to a
separated file (similar to what we did for update‐fixed‐info.xsl /
update‐fixed‐info‐dcar‐ap.xsl or index.xsl / index‐dcat‐ap.xsl )
◦ mdcat:MAGDA‐categorie
◦ mdcat:statuut
◦ mdcat:landingspaginaVoorAuthenticatie
◦ mdcat:landingspaginaVoorGebruiksinformatie
◦ mdcat:landingspaginaVoorStatusinformatie
◦ mdcat:levensfase
◦ mdcat:ontwikkelingstoestand
◦ Only missing in service metadata (not sure why)
▪ dct:publisher
▪ dct:keyword
▪ dcat:theme
▪ dcat:contactPoint
▪ dcat:landingPage