Unify styling across EcoMap & EcoPlot

[walljcg]

We would like to unify the look and feel of both EcoPlot and EcoMap controls. This includes font and colours.

[cisaacstern]

Per @atmorling, subsets of each graphical lib we are using are:

• Plotly:
  • Scatter plot
• Deck.gl:
  • Scatter plot
  • Path (i.e. trajectory/track)
  • Polygon

For deck.gl, there is also styling of widgets (e.g. Title, North Arrow, etc.). These are styled by CSS.

[cisaacstern]

@atmorling, continued... there are two categories of styling:

1. Global/instance/tenant/site level (i.e. not per workflow)
2. Per-workflow/data-specific styling (e.g. line weight of a particular trajectory)

For now, seems like focusing on category 1 makes sense.