Merge branch 'development' into 'master'

.../tudelft/ewi/queue/controller/CourseStatusController.java

...n/java/nl/tudelft/ewi/queue/controller/LabController.java

src/main/java/nl/tudelft/ewi/queue/model/Lab.java

src/main/java/nl/tudelft/ewi/queue/model/Request.java

...ain/java/nl/tudelft/ewi/queue/service/RequestService.java

src/main/java/nl/tudelft/ewi/queue/tasks/RequestTasks.java

src/main/resources/templates/lab/view.html

src/test/java/nl/tudelft/ewi/queue/model/RequestTest.java