Use _metadataDirectory field to link to "collection" in the VLO

[twagoo]

This is a follow-up of #13.

Since https://github.com/clarin-eric/VLO/issues/375 implements the addition of a _metadataDirectory field, links using _fileName with wildcards can now be replaced with a link that defines a more precise query.

For example, the link found at https://curation.clarin.eu/collection/The_Language_Archive.html:

• https://vlo.clarin.eu/search?q=_fileName:*clarin/results/cmdi/The_Language_Archive*

Can be replaced with

• https://vlo.clarin.eu/search?q=_metadataDirectory:clarin/results/cmdi/The_Language_Archive
• (or more correctly the URL encoded version: https://vlo.clarin.eu/search?q=_metadataDirectory%3Aclarin%2Fresults%2Fcmdi%2FThe_Language_Archive)

Note: these links will not work until this feature has been promoted to production, but in the meantime it can be tested in beta.

[wowasa]

changed stylesheet in separate issue_254 branch for it

[twagoo]

Looks good but if you have the ability it would be good to do at least some basic URL encoding. If available, this should do the job: https://www.oreilly.com/library/view/xslt-2nd-edition/9780596527211/re86.html

[wowasa]

pardon - I forgot

[wowasa]

merged to java21 branch