Fix bug 860875: Offer localized build from query param.

Fix bug 860819: Wrap strings for l10n.
Conditional formatting for iOS visitors on download buttons

This is to show the unsupported content block on 'firefox/new' page to
iOS users, hiding the download button.

tidy up

move ios unsupported login into buttons.less

tidy up
Merge pull request #826 from alexgibson/iosdetect

Conditional formatting for iOS on download button.

Fix bug 767985
Bug 867516 - Fix missing bullets on home page tabs
Bug 857842: Force installer-help page to offer full installer.
Merge pull request #805 from pmclanahan/use-lang-from-stub-installer

Fix bug 860875: Offer localized build from query param.
Bug 859537 Russian contribute page
Merge pull request #829 from pascalchevrel/bug-859537-russian-contribute-page

Bug 859537 Add russian contribute page
Revert "[bug 859564] Add /b/ redirect for /contribute/universityambassadors/"

Reverting because this page is not ready.

This reverts commit be67aa484eb358b4e195bb8c12d9ecf6e862d0e7.