Sort folders with all table headers

[saulipurhonen]

Proposed solution

As a follow up for #423 allow user to sort folders with all column types.

DoD (Definition of Done)

User can sort folders with all possible table headers. Also test new added column Last Modified.

Testing

• Integration test

[hannyle]

So far we have the sorting for Date created, we may proceed with column Name. For the other column Last modified by I think we could wait until it's ready from backend.

[blankdots]

issue in backend: CSCfi/metadata-submitter#363