Re-scale Fig5 curves to [0, 1]

Curves start from < 1.0 because of condition layer being used. However, for visualization purposes this does not matter and it's less confusing to scale curves between [0, 1]. Scaling done in terms of group and run.
Add re-scaling function range01()
Update Fig5 caption
Merge branch 'master' of github.com:jlehtoma/validityms
Delete Fig4 svg