added Assignment tests,
categorized Assignment methods
Merge branch 'master' of https://github.com/SWTI2014/SWTI2014-Project-15
Tutors can now grade the submissions
added AssignmentPartTests
categorized AssignmentPart Methods
inserted privileged tutor selection
assignments cannot be deleted after due date any more
categorized Group methods
added group tests
categorized some Course methods
Enable verbose mode and screenshots
Disable screenshots [ci skip]
Grading of assignments parts implemented with submit button
modified Tests for NDGroup and categorized Methods
Enable screenshots
Disable screenshots on master branch [ci skip]
Merge branch 'seleniumOnTravis'

Conflicts:
	.travis.yml
	packages/NeuDeli-Data.package/monticello.meta/version
	packages/NeuDeli-Interaction-Core.package/NDGroupSelectorComponent.class/methodProperties.json
	packages/NeuDeli-Interaction-Core.package/monticello.meta/version
	packages/NeuDeli-Interaction-test.package/monticello.meta/version
	packages/NeuDeli-Tests.package/monticello.meta/version
Fixed Merging errors
added magritte in model
Changed look of starting page for presentation
Improved CSS and repaired breadcrump component
Changed tag ND to tag Sf [ci skip]
Removed NeuDeli packages and Renamed and adjusted Baseline