[JENKINS-17027] Red/green ratio is wrong

This issue is adressed by taking the total number of lines, etc. into account -- instead of only the covered or missing items (depends on whether you have 50% coverage or more)
Fixed overview too.
[JENKINS-19661] Inconsistent complexity score on the dashboard portlet

Complexity score is now the mean.
[JENKINS-19662] Removed (always-empty) block coverage column from the dashboard portlet.
[JENKINS-19789] Method parameters in the class summary table
No completely blank class column for method coverage
Merge pull request #30 from mabako/ratio

[JENKINS-17027] Red/green ratio is wrong
Merge pull request #31 from mabako/complexity

[JENKINS-19661] Inconsistent complexity score on the dashboard portlet
Merge pull request #32 from mabako/old-column

[JENKINS-19662] Removed (always-empty) block coverage column from the dashboard portlet.
Merge pull request #34 from mabako/summary-table-params

[JENKINS-19789] Method parameters in the class summary table
minor styling adjustments for the coverage tables