Bug 1041712 Fix holes in release notes redirects
* Fix missing trailing slash on buglist.html redirects
* Fix redirects for beta releases
Merge pull request #2237 from sgarrity/bug-1041712-release-note-rewrite-fixes

Bug 1041712 Fix holes in release notes redirects
Fix Bug 1041712: also match dot releases
Merge pull request #2238 from jgmize/releasenotes-redirects-dotrelease

Fix Bug 1041712: also match dot releases
Pick up the latest changes from legal-docs
Merge pull request #2241 from kyoshino/update-legal-docs

Pick up the latest changes from legal-docs