redirect Reference Apps ecosystem pages to MDN pages (bug 1022029)
remove `shared_url` helper and tests (bug 1024185)
Allow apps in feed collections to be grouped
Merge pull request #2194 from chuckharmston/grouped_collections

Allow apps in feed collections to be grouped.
Fix migration conflict
removing unneeded .mozilla.com
Merge pull request #2200 from andymckay/less-hosts

removing unneeded .mozilla.com
fix reviewer test
Merge pull request #2198 from cvan/rm-shared-url

remove `shared_url` helper and tests (bug 1024185)
remove dead MAMO/MMMO mobile code (bug 1024136)
Merge pull request #2195 from cvan/lamo-mamo-mmamo

remove dead MAMO/MMMO mobile code (bug 1024136)
remove django-mobility (bug 1019516)
Merge pull request #2196 from cvan/no-mobility

remove django-mobility (bug 1019516)
Refactor transaction status tests (bug 1024751)
Merge pull request #2203 from JaredKerim-Mozilla/1024751

    Refactor transaction status tests (bug 1024751)
Updated app review wording and rating exclusions (bug 1003919)
fix tests
rename group_id to group for feed coll membership
remove django-mobility test (bug 1019516)
Merge pull request #2183 from cvan/mdn-ref

redirect "Reference Apps" ecosystem pages to MDN pages (bug 1022029)