Dependency to _s narrowed to fieldHelpers
node-validator (3.x) now useless because it does not provide essential stuff anymore
dependency update:
- jade (version)
- validator (removed)
introduced coverage threshold
changes from review
updating credits page
Merge pull request #579 from NicoleRauch/master

Test to demonstrate bug #578.
Merge pull request #577 from leider/master

several minor tweaks