[ENHANCEMENT] Chart loads only one year of data on statistics page

[jcscottiii]

As the title states, the chart loads only one year of data on the statistics page.

The chart should redraw the chart as the data is loaded.

The statistics page should block user feedback until data is finished loading.

[dlaliberte]

The chart object will have to receive a new draw() call after new data arrives. It doesn't redraw automatically just because the previously drawn data has been updated. Alternatively, we could wait until all the data arrives before calling draw().