Add highcharts gem
Empty graph loading through ajax
Add HR graph
Elevation data extracted and plotted
Multi-series working a bit better
Graphs automatically organise by distance if data is present, time if not
Change radius
Graphs work, but need summarising, and buttons to add to post
Reduce number of points rendered by graph
Simple data series points added
Reduce simple lines to 500 points total, instead of 50m intervals
Add activity graph & map buttons