[fix bug 1058642] Show /whatsnew tour page for users updating to Firefox 33
Fix Bug 1058265 - Re-enable the Translation Bar using navigator.languages
Merge pull request #2243 from alexgibson/bug-1058642-show-whatsnew-tour-page-firefox-33

[fix bug 1058642] Show /whatsnew tour page for users updating to Firefox 33
Merge pull request #2242 from kyoshino/reenable-transbar

Fix Bug 1058265 - Re-enable the Translation Bar using navigator.languages
Bug 1055048: Move legal docs handling to separate app.

* Add generic view for legal docs.
* Convert privacy app to use new legal docs utils.