Check if figures can be improved

[LDSamson]

Since the plotly objects appear to be the largest bottleneck in starting the application, it would be good to explore other options to improve speed and functionality, such as:

• using native plotly functions
• using an alternative (ggiraph)

[jthompson-arcus]

I have personally found that cutting ggplot out helps a lot.

We can also consider not using plotly library and use a reduced/partial distribution. This is probably less desirable though.