[DESK][OVERVIEW] add items when a filter is used (#2045)
[DESK][OVERVIEW] add items when a filter is used (#2045)

When a filter is used, the whole items are returned (up to 100).
The items can be found in a list at `docs` key.

SDESK-5642
petrjasek/superdesk-core,superdesk/superdesk-core,petrjasek/superdesk-core,petrjasek/superdesk-core,petrjasek/superdesk-core,superdesk/superdesk-core,superdesk/superdesk-core,superdesk/superdesk-core