Admin UI should display the same page after successful resource operation

As part of KNOX-2056, there was a need to introduce angular2-datatable in order to display Knox resources (topologies, service definitions, etc..) in a paginated table if needed (>10 resources found).
As lmccay indicated in one of his review comments the pagination has been reset every time a service definition got updated/removed. It'd be nice to stay on the same page.