#1572 clicking on dataset counter will redirect to /dataset
#1581 adding url param to keep filters box closed
#1603 some fixes to get_last_modifier_user helper function
Changing version number to 0.4.2
#1581 making filter box stay closed when switching tabs and changign
sorting ( if it was initially closed )
Merge pull request #1604 from OCHA-DAP/changes-related-to-datasets

Pull request for: several late changes and fixes for Sprint 36