highlighting reserved artworks
started on service list customerside
geschiedenis, need purchase implementation
better page, all functions except cancelling and extending supported
probably finished it... hopefully... mostly... somewhat...
Merge branch 'services'

Conflicts:
	website/src/main/java/concordia/kunstverhuur/DeleteArtwork.java
	website/src/main/java/concordia/kunstverhuur/Huren.java
	website/src/main/java/concordia/kunstverhuur/Services.java
	website/src/main/webapp/admin.jsp