Enhance examples + Fix some plot orientations

[navidcy]

This PR just goes through the example once again.

• Μakes sure that fields are plotted with the correct orientation, e, g., heatmap(x, y, ζ) -> heatmap(x, y, ζ').
• Changes $math$ to ``math`` for inline latex expressions.
• Adds cfl in all example logs and make sure cfl is only computed whenever log is printed out.
• Makes expressions more verbose, e.g., p, g, v, cl ->params, grid, vars, clock.
• Beautifies code where possible.

A preview is found here: https://fourierflows.github.io/GeophysicalFlowsDocumentation/previews/PR145

Closes #134.

[BrodiePearson]

All the changes look good to me.