activity_scores: s/scrs/score_list

For clarity.

Signed-off-by: Imre Deak <imre.deak@intel.com>
member activity_scores: switch to monthly view spanning two years

Signed-off-by: Imre Deak <imre.deak@intel.com>
member details: remove extraneous semicolon
member activity_scores: show average activity
activity_scores: redraw on window resize event
activity_scores: use the kamu default font x-axis labels
Random UI fixups
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