Fix Bug 925043 - TOC contains empty <code> tags
Updates to tighten up our analytics JS
Remove repeated grid style classes
Remove content extensions, cut down on var calcs
Merge pull request #2180 from darkwing/grid-cleanup

Remove repeated grid style classes
Merge pull request #2183 from darkwing/document-content-updates

Remove content extensions, cut down on var calcs
removed window._gaq closure
avoids non-track of events when async library loads
before bottom of page scripts. `_gaq` pushes should
instead proxy through `mdn.analytics.trackEvent`
Merge pull request #2170 from tomfuertes/master

removed window._gaq closure
fix bug 981313 - Prevent 404 image
fix bug 979807, 878921, 953349 - Prevent first doc save error message
Fix bug 986480 - Only show search navigator UI when needed.
Merge pull request #2174 from jezdez/search-hide-unwanted-navigator-986480

Fix bug 986480 - Only show search navigator UI when needed.
Merge pull request #2162 from mediocrity/remove-redundant-tags

Fix Bug 925043 - TOC contains empty <code> tags
Merge pull request #2192 from darkwing/jquery-ui-981313

fix bug 981313 - Prevent 404 image
Merge pull request #2193 from darkwing/fix-valid-choice-878921

fix bug 979807, 878921, 953349 - Prevent first doc save error message
Merge pull request #2157 from darkwing/analytics-updates

Updates to tighten up our analytics JS
Migrate rules from wiki.css
Updates