Summary:
To complement pull request #142, add the ability to automatically
generate the woff2 files from within the docker. Add a script for copying out
the generated font files to make things easier. Remove the KaTeX_Greek font
files as well as the KaTeX_Win ones, since we don't use them and they're oddly
non-woff and non-eot specific?
Test Plan:
- Build a new docker from the new Dockerfile
- Make sure the woff2_compress program compiles
- Follow the instructions in the README to build the fonts
- Make sure the fonts correctly build
- Make sure the copy_fonts.sh script copies the fonts out
Reviewers: alpert
Reviewed By: alpert
Differential Revision: http://phabricator.khanacademy.org/D13637
