add a route for grouping new users
kill in-progress drawings if you open the menu
teach react about patternTransform

Commit to react fork here: https://github.com/dwwoelfel/react/commit/5e445a1b7ede2afdaaec6373a28c90ad53ec40b8
preamble react
tell us about interesting documents
add ability to set layer threshold
show us occupied documents
faster lookup
mark them interesting if they've recently had a new layer
more robust handling of nils
Merge branch 'master' into chat