tiny improvement: animation duration is now set equal to model.time.speed
radius adjusted for screen sizes
Merge remote-tracking branch 'upstream/develop' into feature/bubble-chart-ebola
hacking underway, no errors but no result yet
manually pre-processed json data
local-json modified to accept different format times. see also bubble chart tool JS L:103-104 and bubble chart preview page HTML L:84-87
removed pre-processing out to the tool level