Add link for the repository report to the header

As the report view will replace the metrics view I have added a link for
the path of it to the header. It will be the start to investigate
quality issues.

Signed-off-by: Konrad Reiche <konrad.reiche@gmail.com>
Do not normalize metric scores to percent

I have removed the multiplication by 100 in the metrics normalize method
as this resulted into mixed values. Whether the score is represented on
a scale between 0 and 1 or as percent should be decided by the interface
representing the value.

Signed-off-by: Konrad Reiche <konrad.reiche@gmail.com>
Display metric scores per repository in a table

Just added a table to list the metric scores so far on the repository
report view. For this I am using a helper method to fetch and normalize
the score.

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