TermsUtil: new method isInterpretedDouble
DownloadTableGenerator: wrong column mapping and data types fixed
HeadersFileUtil: modified to generate the new hive tables columns
Merge branch 'master' of https://github.com/gbif/occurrence

# By Markus Döring
# Via Markus Döring
* 'master' of https://github.com/gbif/occurrence:
  Adding new RowUpdate grouping put & delete
  Refactoring persistence to replace FieldName enum with Terms. Large impact not entirely resolved yet, but pushing preliminary work into github so we can work together on fixing issues at the same time. Agreed over exchanging path files.

Conflicts:
	occurrence-download-workflow/src/main/java/org/gbif/occurrence/download/util/HeadersFileUtil.java