Basic styling on the Mappers toggle.

[jthiller]

I think your instincts were right with respect to general placement. This PR just tweaks things a bit.

Cargo probably needs more significant design love to really get this in the right place.. but that's more of a conversation about what Cargo should be in the future.

• Floated the mappers toggle to the top of the nav, primarily with the concern of real estate on Mobile.
• Wrapped toggle in a label for semantics and a11y
• Changed the label name to "Community Map"... dunno if there is any internal convo around naming on things, but this felt more publicly accessible than "Mappers"

Desktop:

Mobile:

[kent-williams]

This is amazing, thank you @jthiller.