Configure graph template data in metric config files

[bf4]

e.g. lib/metric_fu/metrics/roodi/template_awesome/roodi.html.erb, lib/metric_fu/reporting/templates/awesome/layout.html.erb, lib/metric_fu/metrics/saikuro/template_awesome/saikuro.html.erb still have links to old repository pages. That link should be configured in e.g. MetricFu::MetricRoodi, where everything else roodi is.

Similarly, consolidate the calls to <p>Generated on <%= Time.now.localtime %></p> in the configuration class, or perhaps the formatting option that checks the day.

[bf4]

Also see new base report in #179