* Move background.html to /
* Move context.html to /
* Move info.html to /
* Move legal.html to /
* Move permissions.html to /
* Move pitch-accents-preview.html to /
* Move popup-preview.html to /
* Move search.html to /
* Move settings.html to /
* Move settings2.html to /
* Move template-renderer.html to /
* Move welcome.html to /
* Move float.html to /
* Move display-templates.html to /
* Add script to build library files
* Add built parse5 library
* Add new SimpleDOMParser which uses parse5
* Update license info
* Update MV3 build to use the new SimpleDOMParser
* Update file exclusions
* Hide/clarify license info for MV2 builds
