annotation filters with empty 'created_by' fields are automatically applied
  to dropzone uploaded files
dropzone box includes a hidden '#finished uploading' link which is shown when a file is added
$('#finished_uploading').click submits the current record_filter form, including
  added annotations and project affiliation
reorganized the record_filter form

records_controller:
 - moved logic for handling params[:remove_annotation_filters] into the block
   specifically for params[:record_filter]
 - the query for records based on the current record_filter is built before
   building an empty annotation_filter_term on it for the form and javascript

ALL TESTS PASS