some formatting and trying to find out about the current two errors: 1. the structure solution seems to not work with the :interview extension, 2. error when setting up the ephemeral theories to be put in the mpd (one of f f)

started on neat mpd visualization. need more things: have ephemeral theories appear in tgview, have mmt use the mpd role BoundaryCondition, have mpds only display nodes of type Quantity, Law or BoundaryCondition

partial integration of tgview

including necessary exastencils files, as taken from commit 802c318da86cd215435e3f8c498a20bf7c68ac55 in ScalaExaStencil