Add featured apps and operator shelf to Fireplace featured API endpoint (bug 901710)
Merge pull request #1071 from chuckharmston/901710-api_fireplace_featured

Add featured apps and operator shelf to Fireplace featured API endpoint (bug 901710)
fix check_reviewers only flag to not allow every reviewer (bug 912653)
refactor reviewer_check
Fix failing test and add issuer test (bug 910938)
Bug 909872 - removes Approve and Reject action for privileged apps for reviewers who shouldn't review them.
image url field for collections (bug 911352)
Don't restrict regions for paid WiP