prettier inventory

[regular]

• use pretty names (#13) and display max depth level found for that item in the TOC as star outlines
• Actually achieved levels are displayed as filled stars instead.
• to save space, use flex-boxes and wrapping to put as many items as possible next to each other
• background color is the color of the episode that introduced the item

Example

levelgraph (see regular/bpm#6) says the TOC contains

• git:rebase[introduction]
• git:rebase[explanation]

This means: there are two distinct levels for git:rebase -> we display a total of 2 stars

The student has git:rebase[introduction] in the inventory, -> the first of the two stars is not outlined but filled