Test version of 24h graph page

Signed-off-by: Frank de Brabander <debrabander@gmail.com>
Make vertical scale start at whole number +/- 1 of the domain

Signed-off-by: Frank de Brabander <debrabander@gmail.com>
Add reset method to Average

Signed-off-by: Frank de Brabander <debrabander@gmail.com>
Average objects were not reset

Signed-off-by: Frank de Brabander <debrabander@gmail.com>