Feature note: Instructions on how to read tree

[fgormley1]

Although your tree is fairly intuitive it could be helpful for users who are not used to trees to have an explanation of how to read the prerequisite tree you create. For example, do two nodes next to each other indicate that both of those courses must be taken? What about when there is a node next to another node that says “any of” and has child nodes they also say “any of”? it can get a bit complex so having a short instruction popup on the side of the tree could be a useful feature.

[ngordonumass]

Currently working on implementing a "key" to help users understand the tree. Ideally, we want an english version of the prerequisites on the tree page somewhere. And possibly something to explain what the "option" and "any of" nodes mean for clarity