add new article api resource, fix api image updating, add behat tests
add docblocs, add behat tests to travis, smaller fixes
Merge branch 'master' of https://github.com/sourcefabric/Newscoop into new_article_resource

Conflicts:
	newscoop/library/Newscoop/Installer/Services/DatabaseService.php
adjust sample article type
fix sample article type query
fix travis behat command
add placehoders for behat steps and support actions
small fixes
Merge pull request #901 from ahilles107/new_article_resource

add new article api resource, fix api image updating, add behat tests