Merge pull request #180 from interstroom/master

Dutch translations
Add Post & Comment POST/PUT/DELETE API methods

Fix feedbacks + add unit tests

Add some fixes

Fix POST and PUT methods to use form types instead of serialization

Remove non-used annotation

Fix feedbacks

Fix post controller method name

Fix APIs to use SerializationType

Remove post form type and add a check for deletion result
Fix exception typos
Merge pull request #178 from eko/api

Add Post & Comment POST/PUT/DELETE API methods
Merge pull request #181 from eko/fix

Fix exception typos
Fix post comment add method
Merge pull request #182 from eko/master

Fix post comment add method
Fixed typos
Merge pull request #183 from pborreli/typos

Fixed typos
Make serializer.xml available
Added CONTRIBUTING.md file
Merge pull request #185 from Bladrak/contributing

Added CONTRIBUTING.md file
fix getPager

criteria "collection" didn't work (check for instance of CollectionInterface caused by missing use-statement)
Added status renderer for bootstrap3 admin compatibility
Merge pull request #184 from eko/master

Make serializer.xml available
Merge pull request #186 from arosslau/patch-1

fix getPager
Merge pull request #187 from Bladrak/adminBootstrap

Added status renderer for bootstrap3 admin compatibility
tweak the comment edit form
improve backend layout
fix typo