VeryGenericIndicator Mini Widget - Would be more generic if custom mode just allowed you to format using a template #992

In attempting to add Lat, Lng onto the footer bar I currently have to do as two seperate variables. Also, having done this I can't easily get the formatting at the right display precision.

Given Custom mode is a power feature what if you went away from the set variable picker to a textarea field where you could enter your format using a moustache/handlebars template for variables and formatting?

That would allow something like the attached example.