[api] Get pagination only when exists.
CS-5328: On newscoop side error the http code shouldn't be 200 to avoid caching by proxy
CS-5328: convert tabs to spaces
Merge pull request #677 from ahilles107/CS-5328_better_error_pages

Cs 5328 better error pages
Merge branch 'master' of github.com:sourcefabric/Newscoop into v4.3