ordering the select boxes in the layer admin
adding TOC and TOCTheme models to data_manager.  adding table_of_contents field to MarinePlannerSettings.  if no toc is indicated then all layers and regular themes are loaded (themes determined at the layer model level).  if toc is indicated then layers are determined at the toctheme model level.  in this way a new toc can be created via the admin which allows for a new toctheme to be created which allows the user to select the layers to be associated with each theme. requires migration of data_manager and mp_settings apps.