Add declaration reason

Description

• Adds reasons to declarations
• Fixed overlay bug

Related Issues

• Resolves #87 (closed)
• Resolves #107 (closed)

Checklist

• I have added a changelog entry to reflect the significant changes I made.

src/main/java/nl/tudelft/tam/dto/create/DeclarationCreateDTO.java

@@ -43,6 +43,9 @@ public class DeclarationCreateDTO extends Create<Declaration> {
 	@NotNull
 	private Integer amount; // amount of quarters, e.g. 1h = 4
 
+	@NotNull
+	private String reason;
+
 	private Status status;
 
 	@Override
@@ -57,6 +60,7 @@ public class DeclarationCreateDTO extends Create<Declaration> {
 				.person(SpringContext.getBean(ProfileRepository.class).findByIdOrThrow(personId))
 				.extraWork(SpringContext.getBean(ExtraWorkRepository.class).findByIdOrThrow(workId))
 				.amount(amount)
+				.reason(reason)
 				.status(status)
 				.build();
 	}