gui cleanup
temporarily disable render backintime
start to separate gui from engine
fix .go tests
move keepalive into gui state
move keepalive fully into gui
gui.Prepareserver on demand
cleanup
imporve gui mesh size handling
fix geom init + progress
mess with running label
cleanup gui mux
make render part of gui state
fix progress bar race condition
stash render save count
add self-defined variable to table
tableaddvar doc