enforce minimum number of apps in colls in order to be deserialized on feed (bug 1033821)
Merge pull request #2453 from ngokevin/feedmin

enforce minimum number of apps in colls in order to be deserialized on feed (bug 1033821)
Fix in-app receipt validation (bug 1058112)
Merge pull request #2456 from kumar303/inapp-receipt-fix

Fix in-app receipt validation (bug 1058112)
Prevent purchases of inapp on non public app (bug 1043590)

- Add form validation
- Add test
Merge pull request #2457 from JaredKerim-Mozilla/1043590

Prevent purchases of inapp on non public app (bug 1043590)