Rather then resurrect an old thread from May 2015...
I appreciate that some of the extra plugins that people have made do not yet have schemas and therefore cannot be formally loaded into the authoring tool.
However, I wonder if plugins like the MathJax one can be manually added to a course created using the authoring tool retrospectively? It feels like there may just be an appropriate place in the directory structure to copy the plugin's files and perhaps update one other file to inform the framework that there is another plugin in load? Is there just somewhere clever to put the Mathjax-master directory?
I assume this applies to a variety of other plugins too, so the answer is probably already well known by someone.