Latest version CKAN 2.5.x, 2.6.x

Merge pull request #4 from m431m/master

Fixed bugs + CKAN 2.7 compatibility. Thanks a lot for your contribution and for keeping it compatible with previous versions :)

Stable version CKAN 2.5.x, 2.6.x

Extension before applying the changes to be compatible with CKAN 2.7