Handle loading of CommonHTML jax better (do it when we detect it is not present, rather than trying to hook into the input jax require array).
Fix some local/global variable issues detected by doing the compression.
Handle <mlabeledtr> by dropping the label for now.  Resolves issue #968.
Merge branch 'issue968' into common-html
Merge branch 'common-html' into CHTML-preview
Handle moveable limits on munderover.  Resolves issue #970.
Merge branch 'issue970' into common-html
Merge branch 'common-html' into CHTML-preview
Merge branch 'dpvc/CHTML-preview' of https://github.com/dpvc/MathJax into v2.5-alpha
update CHTML output for 2.5-alpha; repack and combine; update cache-breaking version to 2.5-alpha-2