add geonames webservice client dependency [#43967997]
preliminary geonames.org lookup selection action [#43967997]
update unit test to account for tagAllowedAtSelection method
revise maven project file to update to geonames 1.1.9 client, for access to hierarchy api call
preliminary/partial unit tests for geonames lookup
more geonames lookup unit tests
unit test for method to make a tag based on a geoname toponym
minor cleanup
update plugin description/usage info in oxygin add-on xml to include dbpedia & geonames
Merge branch 'feature/geonames-lookup' into develop