Remove incorrect nodeValues for non-text nodes.  Resolves issue #747.
Add useMathMLspacing option to AsciiMath input jax.  Resolves issue #743
Compress close and menu images, and only pre-load menu arrow when discoverability is requested.  Resolves issue #734.
Don't use MathJax_MSIE_Frame for those vesions of IE that suppor position:fixed (7 and above, as it turns out).  Resolves issue #738.
Make annotation NOT be a token element, by adding a new isChars flag to force its contents to be a chars node rather than an mtext node (which is why it was labelled isToken originally).  Resolves issue #376.
Merge branch 'issue747' into develop.  Issue #747.
Merge branch 'issue743' into develop.  Issue #743.
Merge branch 'issue734' into develop.  Issue #734.
Merge branch 'issue738' into develop.  Issue #7348.
Merge branch 'issue376' into develop.  Issue #376.