removed hidden columns from exports
wait the the filtering til
minor changes
extrated the filtering in a common method
Merge pull request #161 from PrimeRevenue/feature/remove_hidden_hideable_columns_for_export

Feature/remove hidden hideable columns for export
Column chooser changed to drop down
restrict columns to hideable
Merge pull request #162 from PrimeRevenue/ui/column_chooser_dropdown

Ui/column chooser dropdown
style fixes for column dropdown
Merge pull request #163 from PrimeRevenue/defect/column_edits

style fixes for column dropdown
Merge branch 'master' into feature/collection_integration