Bug 1009294 - http://www.mozilla.org/en-US/lightbeam/ needs several small updates

Corrections to the Lightbeam About page as described in
https://github.com/mozilla/lightbeam/issues/473

Also removes references to the database server which doesn't exist yet.
Added a rule to redirect accesses to /ja/?$ to http://www.mozilla.jp/ (Bug #1013082)
Bug 442671 - Revoke Mozilla Trademark Policy for Localization Projects.
[bug 442671] Add redirect for revoked Trademark Policy for Localization page
Redirect Firefox system requirements to Bedrock
Bug 957242
Fix Bug 975020 - Translation Bar and non-locale redirects don't work as expected in some cases; use the user's accept language list to fix it
[fix bug 977391] Fix GA tracking in form signup on /contribute
bug 977391 - add video engagement tracking

Track pause/play events on the video sequence.
Merge pull request #2054 from craigcook/bug-977391-video-tracking

bug 977391 - add video engagement tracking
Merge pull request #2035 from mozilla/bug-977391-fix-ga-tracking-contribute-page

[fix bug 977391] Fix GA tracking in form signup on /contribute
Merge pull request #1771 from kyoshino/bug-975020-user-lang

Fix Bug 975020 - Translation Bar and non-locale redirects don't work as expected in some cases; use the user's accept language list to fix it
Fix bug 1008495 - update education section on Get Involved page
Fix Bug 1018428 - "bug tracker" link to Bugzilla from 404 error page returns another 404 error page
Fix Bug 1018423 - Privacy Policy link broken on Donation page - returns 404: Page Not Found
Fix Bug 1017123 - update email address on /grants page
Merge pull request #2053 from sgarrity/bug-957242-system-requirements

Redirect Firefox system requirements to Bedrock
Remove video-js lib to fix bug 1006351
[fix bug 1009570] Improve a11y of SVG and img alt text content on /firefox/desktop
Merge pull request #2060 from kyoshino/bug-1017123-grants-email

Fix Bug 1017123 - update email address on /grants page
Merge pull request #2058 from kyoshino/bug-1018428-bugzilla-404

Fix Bug 1018428 - "bug tracker" link to Bugzilla from 404 error page returns another 404 error page