worked on administration
Temp save.
Changed vaadin plugin version.
Merge branch 'nilson'

Conflicts:
	grails-app/conf/BootStrap.groovy
	grails-app/domain/kennisbank/checkin/StudentCheckin.groovy
	grails-app/vaadin/kennisbank/checkin/StudentCheckinWindow.groovy
	grails-app/vaadin/kennisbank/fabtool/MainView.groovy
	grails-app/vaadin/kennisbank/fabtool/projects/ProjectView.groovy
	grails-app/vaadin/kennisbank/fabtool/projects/ProjectsOverview.groovy
	target/stacktrace.log
Fixed problem with checkin domain class.