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)
Follow up of 57d8ac7 : prevent duplicate params in pagination URLs (bug 945709)
Fixes tests broken in bdf023d
Add IT docs from mozilla/marketplace-docs (bugs 943538, 943544, 943548)
Merge pull request #1486 from diox/fix-pagination-duplicate-params

Follow up of 57d8ac7 : prevent duplicate params in pagination URLs (bug 945709)
refactor the way comm notes/threads are created
auto-mark old msgs as read when join thread, refactor comm tests (bug 931223)
remove action visbility checkboxes from reviewer tools (bug 931237)
work on and refactor communication dashboard emails