When Flexpool pays you out, the spread function considers the payment as
balance earnings. Using non_negative_derivative instead to flatten the curve.
Signed-off-by: Julien Riou <julien@riou.xyz>
Estimated and reported hashrates where grouped by worker. Now the graph shows
the sum of all workers, because this is an overview dashboard after all. To show
graphs per workers, we should use the Flexpool workers dashboard.
Signed-off-by: Julien Riou <julien@riou.xyz>
