DELETE and PUT in REST API added.
Worked on the customer list, fixed some routes issues.
Merge remote-tracking branch 'origin/RESTEditing' into Listing
Fixed after the merge with Martin.
Just so we can merge
Merge remote-tracking branch 'origin/PossibleUpToDate' into Listing

Conflicts:
	.idea/workspace.xml
	test/modelTests/modelOrder.js
Merge branch 'Listing' into PossibleUpToDate

Conflicts:
	.idea/workspace.xml
	models/customer.js
	test/modelTests/modelOrder.js