More fields to be sortable in grid/table in GUI preview forms (HOSTS, Users, Actions, etc. ...)

More column headers should be sortable:

In Hosts, sort by Interface column
In Users, sort by who and when Is (was) Online column - to display frequently/last used acounts and to check their refresh time
In Actions, add new unique (even it's database own) action ID column and make it sortable
In Actions, sort by Operations column