Fix migration and more

• add @Lob to hiring and reject messages
• add lazy loading to some beans

src/main/java/nl/tudelft/tam/model/JobOffer.java

@@ -69,9 +69,11 @@ public class JobOffer {
 	@Nullable
 	private String description;
 
+	@Lob
 	@Nullable
 	private String hiringMessage;
 
+	@Lob
 	@Nullable
 	private String rejectMessage;