bump amo-validator and app-validator
fix wrong URL
Make MDN URLs correct so that no redirects by MDN are needed.
Merge pull request #889 from markgif/patch-3

Make MDN URLs correct so that no redirects by MDN are needed.
Fix status change free-inapp (bug 892905)
Merge pull request #890 from muffinresearch/fix-status-change-free-inapp-892905

Fix status change free-inapp (bug 892905)
Add features to API (bugs 881765, 881767)
Fix tests broken by 63c490b3