based on simile-widgets/exhibit@347edb88868804b57f5f1c30cd187b2c96032d4e originally from karger/exhibit
missing var; based on simile-widgets/exhibit@929d22db8d36eec4c25a83b72e69178573d694f8 originally from karger/exhibit
warn if switching to non-existent view; based on simile-widgets/exhibit@ee9247e71d59c9d6b099343b320fdf59487df266 originally from karger/exhibit
upgrade history.js; based on simile-widgets/exhibit@e2a5a65cba84ebf9c28a296b2890bf85cbee3e1e originally from karger/exhibit
bring coordinators back; based on incomplete simile-widgets/exhibit@80b392b66501a8c8cd2be9210196d2a7efec316d originally from karger/exhibit
fix path to stylesheet
set basic display attributes immediately, stylesheet may not render in time for busy indicator
bring back presidents demo with coordinator working