rename "votes per day" to "votes per date"
add a chart to show the voters per day of the week
include a missing file
convert some graphs to bar charts
make sure the charts resize when the window does
extract the common javascript out into a separate file
Fix compilation and tests
Add tests for the enw voting stats method
Merge branch 'adrianbanks:votes-on-which-day-of-week' into staging

Add voting stats to show which day of the week votes were cast on