As a developer, I would like to be able to read and more easily understand the code for the click/hover popup box on the map

[gsehrlich]

Is your feature request related to a problem? Please describe.
The click/hover popup box on the map works, but I implemented it hastily and the code is a bit messy. Some refactoring would clear it up. The prototypes at the bottom may also be missing for some variables.

Describe the solution you'd like
Refactor.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Let's make sure we actually want the hover/click interaction before we put too much energy into refactoring it.

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For Developers

Affected Components
I think mostly web/src/components/map/menu.js and ./hover.js.

Testing Outline
Currently this functionality is not tested. Some tests would be a good idea...