add some units to declarations, minor test adjustments

[orichters]

Purpose of this PR

• add some units to declarations
• adjust CITATION.cff version to 1.2.0 to support all orcids (Accept X in last position of Orcid citation-file-format/cffconvert#394)
• move gamscompile test after quick such that inputdata are available
• In xlsx_IIASA.R print renaming messages only if something is renamed

Type of change

• Cleanup

Checklist:

• My code follows the coding etiquette
• I performed a self-review of my own code
• I explained my changes within the PR, particularly in hard-to-understand areas
• I checked that the in-code documentation is up-to-date
• I adjusted the reporting in remind2 where it was needed
• I adjusted forbiddenColumnNames in readCheckScenarioConfig.R in case the PR leads to deprecated switches
• All automated model tests pass (FAIL 0 in the output of make test)
• The changelog CHANGELOG.md has been updated correctly