Extend sorting and integrate API sorting with frontend

[Fifok]

I saw that for Type column (potentially for all columns) sorting isn't working correctly.
If we sort by Type, displayed content types will contains only one "Block" content (for Foundation project of course).

On page 6 (with 15 per page items count) we see much more than one "Block" content.

After syncing with @mgorzanski we saw that there is sorting on FE and on BE totally independent from each other.

Solution proposal:
Change FE sorting mechanism because we don't have pagination mechanism in ContentType/GetContentTypes endpoint (just sorting, which is not used).

[Fifok]

I changed the title, because we thought, that it'll be better to change filtring/sorting data to use our BE API.

Main reason: we want to avoid sending to a client huge set of data.

[Fifok]

After #36 it seems to be fixed on FE side.

@darekhalecki @mgorzanski
I prepared #42 and #46 PRs with adding BE sorting and integration in the meantime, but we can consider to not implementing this solution.