#80 Update citation.tsv & citation.properties (after Merge v6.4) III

- Edit authorIdentifier.description & publicationURL.description

importConstants

Added labels in Bundle.properties to prevent log messages

#77 Update controlledVocabulary language codes

- Add some missing two- and three-letter ISO 639 codes (new in dataverse v6.3 - missed in merge v6.3)
- See: https://github.com/IQSS/dataverse/releases/tag/v6.3 -> Improved Controlled Vocabulary for Citation Block

#61 Fix location of prettyprint.xsl + Add some Unit Tests

- Fix after v6.2 Merge: Move prettyprint.xsl to the correct folder (otherwise prettyPrintXML method doesn't work and FundingReferences are not send to Datacite)
- Add some Unit Tests for DataCiteMetadataUtil

Merge tag 'v6.2' into mpdl-develop

Fix for wrong queries in GuestbookResponseServiceBean

Fix for wrong queries in GuestbookResponseServiceBean

Merge fix

Update mpdl-release.yml