Revamp server panel

[wwqrd]

Update the network panel to show status icons which activate overlays. Refresh styles in the intro components and protocol overview screen.

Resolves #300 Resolves #299

[jthrilly]

Currently outstanding:

• [x] Tests
• [x] Finalize toast use in export process
• [x] devices and pairing instructions need to respond better to limited vertical space
• [x] Window needs a minimum size
• [x] unsafe pairing mode styling needs to be updated
• [x] large datasets cause the overview to be extremely slow when resizing (created issue here: https://github.com/complexdatacollective/Server/issues/314)
• [x] overview charts should have a loading state. perhaps combine with adding a async.queue to the API client (created issue here: https://github.com/complexdatacollective/Server/issues/312)