mappings/VegCore.csv: Regenerated from wiki. Synonym lists have now been translated to sections to create a web page anchor for each synonym, using the steps at <https://projects.nceas.ucsb.edu/nceas/projects/bien/wiki/VegCore_refactoring#Index-synonyms-as-web-page-anchors&gt;. This enables searching for VegCore synonyms in the data dictionary as well as terms, and makes it possible to swap a term and a synonym while still keeping both as indexed anchors.