replace E_max < 0.001 with 0
Merge branch 'dev' of github.com:hmslincs/hmslincs into dev
very-beta scatterplot widget
assorted tweaks
new name: scatterplot_browser
add scatterplot_browser to tools table
minor formatting changes

1. "re-instate" #pagebody
2. make "track" narrower
clean-up visibility handling
remove scrollbar hack
minor tweak
decruft css, js, html
major upgrade of scatterplot_browser
fix small css bug