OOIION-1627
Use regular expressions for a filter, allowing a field to appear more than once. Before this fix, a user might want to see DESCRIPTION CONTAINS CTD and DESCRIPTION CONTAINS SeaBird expecting to see rows where 'CTD' and 'SeaBird' were both in the DESCRIPTION field. Native datatables would only show the results of one of those constriants (SeaBird) because only one filter could be applied to each column. But that is no longer the case.
Each constraint is AND-ed with the next.
Merge pull request #272 from cgalvarino/datatable_filter_by_regex

OOIION-1627