Add repositories member statistic view

I have added this view in order to display the creation and update times
statistic I am starting to record. For now it will only be printed in a
CSV format. Later I will replace this with a scatter plot.

Signed-off-by: Konrad Reiche <konrad.reiche@gmail.com>
Reorder times statistic

I have reordered the times statistic so the result can be printed in one
CSV dump.

Signed-off-by: Konrad Reiche <konrad.reiche@gmail.com>
Equalize leaderboard tanking

Repositories with the same score get the same rank number assigned now.

Signed-off-by: Konrad Reiche <konrad.reiche@gmail.com>