Try setting up TEMPO-Lite to read data from ESRI server

[patudom]

Goals behind this request:

• get correct equirectangular projection from the ESRI server that leaflet can handle (so we don't have to experiment with openlayers which is better at managing different projections)
• easier way to have 2 colormap options
• we don't have to process/store the data ourselves
• for views of the full continent, this might be faster than our images.

Todos:

• Wire up the data calls that we're already using in glue-map
• Set up the url to ask for the right number of pixels depending on the area of the field of view (rather than a hard-coded # of pixels). (If we figure out the right way to do this, port it over to tempods also).
• Set up a toggle to request current TEMPO-Lite color map (or something similar to it) & color-blind friendly magma.