Styling of the new menu

Styling of the new menu and related functionality
We are here demanding that node_modules lie on place, and that the karma used is installed in node_modules (yeah I know, current usage), but as it is a devDependency we can actually ask the developer to add karma to his or her PATH, or install the program karma-cli. See [this SO-question](http://stackoverflow.com/questions/14657170/installing-global-npm-dependencies-via-package-json), second answer.