Merge pull request #591 from takeit/stablemaster

CS-5255  Image renditions
set NO_CACHE on login, remove it on logout
Merge pull request #592 from ahilles107/NO_CACHE_API

set NO_CACHE on login, remove it on logout
Merge pull request #593 from takeit/stablemaster

[CS-5263] - wrong output of label banned in comments overview page
fix ignoring tinymce scripts, remove cookie properly
Merge pull request #594 from ahilles107/NO_CACHE_API

fix ignoring tinymce scripts, remove cookie properly
http_host set when running via CLI
Merge branch 'master' of github.com:sourcefabric/Newscoop into stablemaster