Remove Authorization Groups

[amercader]

1.7 will hide the link on the footer and put a deprecation notice on the related pages, but they should be completely removed on 1.8.

[dread]

For my site I need the Authorization Groups sections gone from the authz pages, for v1.7.1, so I've made these check for the presence of any Authorization Groups in commit: [master 8947302]. So it's another useful stepping stone to getting rid of them cleanly.

[ross]

I think the UI aspects have been removed in 1.7 with hopefully the rest of it going in 1.8 - assuming we have a clean migration script.

[dread]

Thanks Ross. It's the dataset authz and admin authz pages which still need Authorization Groups removing. e.g. ​http://thedatahub.org/dataset/authz/conservative-party-uk-donors-by-sector and ​http://thedatahub.org/en/ckan-admin/authz

[ross]

Need to make sure there is a clear migration between authgroups and organizations if desired.