[Feature Request]: Grouping of Concept tree into single entity

[Marviel]

This one might already exist, but I wanted to throw it out there.

I notice that some concepts which are treated as single entities at this point are actually composed of several composite entities (i.e. you need to understand each of the 10 qualifiers for something to be considered a Vector space in order to understand vector spaces). I believe it makes sense to lump these things together under a single concept, but it could be considered useful to optionally display the "exploded" view of a concept into as many (or as few) of its composite pieces as a learner desired.

This could also assist with the general ranking of how long it could take to learn a concept, as each of the sub-concepts could be weighted based on their apparent difficulty.