on delete graph, go to first graph; closes #355

instead of closing project, go to first graph or component if exists
create new component/graph opens it; closes #215
don't lose html preview contents; fixes #201 :bow:
only change preview html on save; fixes #301
noflo-runtime: running/not-running status comes from 'execution' event
Set very lenient timeout for live mode
Include RTC.io script
Safety
Add WebRTC runtime to main
noflo-runtime: Use status.running/started instead of .label
Merge remote-tracking branch 'origin/master' into inception
noflo-runtime: running/not-running status comes from 'execution' event
noflo-runtime: Use status.running/started instead of .label
Merge remote-tracking branch 'origin/master' into webrtc
preview iframe maximize size

I think that the “Handle maximization” code (this.panel.size) in
elements/noflo-runtime.html was some legacy stuff: nixing it fixes #252.
Use rtc.io from bower instead of from github cdn
Merge remote-tracking branch 'origin/master' into webrtc
WebRTC: Print debug URL, don't leak to window.rt
Remove duplicate notifications
Test with newer Chrome