Layout visualization elements on the screen

[rcriii42]

When I define the visualization elements in the server, they are stacked in a single column.

server = ModularServer(GeoModel,
                       [map_element, progress_indicator, another_progress_indicator, etc],
                       "Project 11", model_params)

This leaves a lot of white space to the sides of my browser screen. Is there a way to control where the elements show up on the screen. i.e. I want the progress indicators (these are TextElements) to the left or right of the map_element. Note that map_element is a mesa_geo MapModule.

Thanks for the great project!