Plots.jl: No output on JupyterLab and PlotlyJS

[staticfloat]

When using JupyterLab and PlotlyJS as my backend, I receive no output after plotting:

Whereas, when using PlotlyJS directly, things work:

[staticfloat]

@sglyon notes that this may be due to incomplete MIME type passing.

[sglyon]

If these lines were uncommented the issue would go away :)

Though it might require a bit of reorganization given that IJulia integration now happens via Requires.jl and I think those lines are from a pre-Requires era

[mkborregaard]

Is this not a duplicate of #1386 ?

[mkborregaard]

Those lines were uncommented by @tbreloff back in https://github.com/JuliaPlots/Plots.jl/commit/80e53adbd8453184fffe28a0b753503790a9e3fb not really sure why. It's worth just commenting them in and see what happens.

[sglyon]

I'm actually putting together a PR that will fix this for both plotly and plotlyjs backends -- hang tight

[mkborregaard]

:100: 💖 👍

[sglyon]

got it working -- but need to leave now. will package into PR soon