Fix file viewer permissions.

tmpfile.mkdtemp creates a directory with 700 permissions,
then shutil.copytree copies the 700 over to "dest". This directory is
then unreadable by the webserver.
Hide non-public apps inside collections (bug 941337)
fix deleting apps that have content ratings (bug 945466)
put regions w/ content ratings under switch (bug 943646)
Updated "Editors' Guide" URL in queue.html (bug 920289)
Merge pull request #1480 from ngokevin/iarcdelete

fix deleting apps that have content ratings (bug 945466)
Merge pull request #1450 from ngokevin/master

put content ratings for regions other than BR/DE under waffle (bug 943646)
Fixed data, which is passed by reference
update pfs for shockwave; bug 942746
Re-instate Free/Paid tabs (bug 945659)
Commit from Mozilla Verbatim by user gialloporpora.: 5074 of 5074 strings translated (0 fuzzy).
Merge pull request #1482 from muffinresearch/reinstate-free-paid-tabs-945659

Re-instate Free/Paid tabs (bug 945659)
Merge pull request #1477 from diox/fix-collections-500

Hide non-public apps inside collections (bug 941337)
Allow admins to edit ratings posted by other users (bug 938415)
Merge pull request #1470 from diox/ratings-allow-edit-by-admins

Allow admins to edit ratings posted by other users (bug 938415)
Merge pull request #1481 from rctgamer3/master

Updated "Editors' Guide" URL in queue.html (bug 920289)
Fix pagination for all DRF APIs by inheriting from MarketplaceView (bug 945709)
Merge pull request #1483 from diox/fix-api-drf-pagination

Fix pagination for all DRF APIs by inheriting from MarketplaceView (bug 945709)
Prevent reverse from returning unversioned API URLs; ensure that API-Status: Deprecated is correctly returned; assume API-Version: 1 in unversioned URLs (bug 944343)
Merge pull request #1484 from chuckharmston/944343-api_deprecated

Prevent reverse from returning unversioned API URLs; ensure that API-Status: Deprecated is correctly returned; assume API-Version: 1 in unversioned URLs (bug 944343)