update pfs for flash; bug 974132
Fix URL for the app preview posting API (bug 974957)

DRF automatically generates it, and we want/documented /preview/,
not /preview_list/ !
Merge pull request #1790 from diox/fix-api-previews-url

Fix URL for the app preview posting API (bug 974957)
some more logging for token url
point mkt stage towards iarc demo
Merge pull request #1791 from andymckay/more-logging

some more logging for token url
Create a product and price model (bug 944487)

- Create inapp app
- Create InAppProduct model
- Add a migration
Merge pull request #1789 from JaredKerim-Mozilla/944487

Create a product and price model (bug 944487)
Oops. Invert logic.
Renamed InApp migration from 751 to 754
Merge pull request #1792 from JaredKerim-Mozilla/975025

Renamed InApp migration from 751 to 754
use latest version when creating comm note for resubmission (bug 915710)
allow dupe iarc certs on dev (bug 975050)
Merge pull request #1793 from ngokevin/iarcdupe

allow dupe iarc certs on dev (bug 975050)
add logging to comm email api endpoint (bug 929759)
handle empty applog details in comm migration (bug 920743)
Bug 971954 - Send a single compatibility email per author
some more comm email logging
another comm email log to debug
Move installed/purchased/developed lists in a separate 'apps' key (bug 969433)

This will make the consumer side a little easier to implement, and
since it's private API nobody is using yet we can do it without
fear of breaking backwards-compatibility.