Bug 1001377:  /ja/firefox/new returns 404 page
Merge pull request #1919 from pascalchevrel/bug-1001377-activate-japanese-download-page

Bug 1001377:  /ja/firefox/new returns 404 page
Bug 925278 - Enable channel page for ja, mr, vi
Merge pull request #1924 from flodolo/channels

Bug 925278 - Enable channel page for ja, mr, vi
Bug 1001100 - Allow localizers to add HTML content on Nightly firstrun
Merge pull request #1916 from TheoChevalier/community-promo-nightly

Bug 1001100 - Allow localizers to add HTML content on Nightly firstrun