Make it so we don't need to change the nginx configuration of edX
Right now, edX does not allow you to serve xml files. mxGraph needs to serve some xml files to work. We need to either include these files another way (rename them to something not ending on .xml
?) or find another way around this configuration.
For now I changed the edX configuration, but is anyone else would want to use this XBlock that would not really be an acceptable solution.