Update mapping

[sannegovaert]

Practical changes:

• rename and replace R project
• move spreadsheet to 1 big file with all the checklist spreadsheets
• update script
• simplify code
• use fixed taxonID hashes in spreadsheet

Content changes:

• apply new rules for eventDate, see https://github.com/trias-project/ad-hoc-checklist/issues/42
• add pathway, degreeOfEstablishment and occurrenceRemarks to distribution
• add genus to taxon