Linting madness (2)

* Linting all over the place
* deleted raphael unit tests as raphael is not used anymore (and has not been for a long time)
* slightly edging the project out of grunt (too much of a hassle, needs tons of plugins to run, too opaque, not fitting my simple needs ...)
* plato and jshint runner should now use exactly the same jshintrc file
* now linting e2e specs