First refactor of the search navigator JS
Minor syntax updates to contributor stuff
fix bug 1000572 - Sync preview styles with documents
fix bug 880049 - Update mdn sample content
Migrate wiki-screen rules about notes and warnings
Merge pull request #2330 from darkwing/live-sample-headings-880049

fix bug 880049 - Update mdn sample content
Add @fred-wang CSS for MathML fallback

The CSS was based on
https://github.com/fred-wang/mathml.css.

This should close bug 981409.

Thanks to @darkwing for the help.

- Add CSS MathML fallback
- Add Javascript to test for web browser MathML support
- Add Javascript to add warning when browser not support MathML

TODO:

- Localization for warning.
Migrate button styles from wiki-screen.css
Migrate #article-head from wiki-screen.css
fix bug 892639 - Don't allow external REDIRECT urls
Fix strict var name
Merge pull request #2338 from darkwing/js-strict-update

Fix strict var name
Merge pull request #2324 from openjck/wiki-screen-notes-warnings

Migrate wiki-screen rules about notes and warnings
Merge pull request #2334 from openjck/migrate-button-styles

Migrate button styles from wiki-screen.css
Merge pull request #2337 from openjck/migrate-article-head

Migrate #article-head from wiki-screen.css
Move #deki-page-tags, #page-comment, content rules
Migrate revision deletion rules from wiki-screen
Issue #2298: Update kumascript to latest master for node v0.10.x
Merge pull request #2341 from lmorchard/pr-2298-kumascript-update

Update kumascript to latest master for node v0.10.x
issue #2298: Update kumascript for exception bugfix