Remove all duplicate queries

[sshane]

Idea is to selectively import setters/getters where this global state is needed.

As noted here, where we query the routes is quite far away from the RouteActivity, so we'd need to pass setters/getters as properties from multiple components to get this information which is cumbersome.

Instead we can either implement currentX signals, or a global store of the devices and routes we've loaded so far. Currently experimenting with which is simpler.

• [ ] How do we set the currentRoute when you open a URL to a route without clicking? I'm sure Sam knows

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