1) Update unicode.patch against the most recent version of unicode.xml
2) Only use the 'AMS' set of unicode.xml for LaTeX characters commands (+ more itex2MML commands) to avoid errors due to one-to-many mappings in the "latex" set of unicode.xml
3) make all the tests pass.
Merge branch 'master' into gh-pages
Regenerate TeXZilla-min.js