t: restui: test sensors
t: restui: test sensors

Test the following endpoints:

* sensors.list    - existing, non-existing device
* sensors.detail  - existing, non-existing, with and without history
* sensors.current - existing, non-existing, with and without history
* sensors.history - range=hour, range=start,stop

Signed-off-by: Jan Viktorin <3eab6ac54c005c4408f608556a6663b7f2abede7@fit.vutbr.cz>

BeeeOn/server,BeeeOn/server,BeeeOn/server,BeeeOn/server