Redirect all Firefox 'details' pages to bedrock
Bug 960651
For all locales, any URLs for /firefox or /mobile
with /[version]/details/ will redirect to a localized
general localized upgrade page in bedrock
Merge pull request #1690 from sgarrity/bug-960651-details

Bug 960651 Redirect all Firefox 'details' pages to bedrock
Bug 957711 followup, fix NoReverseMatch error at /firefox/new/
Merge pull request #1698 from kyoshino/bug-957711-mobile-404

Bug 957711 followup, fix NoReverseMatch error at /firefox/new/