Resolve "Add note to Job Offer and Extra Work"

This MR adds the possibility to add notes to job offers and extra work.

Changes

• all create and edit pages fro job offers and extra work were changed
• the job offer list page has been changed to include a '?', when hovered over with mouse the note is revealed
• individual detail pages of job offer and extra work include note field

Screenshots

Closes #36 (closed)

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

@@ -42,21 +42,11 @@ public class ExtraWorkCreateDTO extends Create<ExtraWork> {
 	@DateTimeFormat(pattern = "yyyy-MM-dd")
 	private LocalDate deadline;
 
+	private String note;
+
 	@Override
 	public Class<ExtraWork> clazz() {
 		return ExtraWork.class;
 	}
 
-	@Override
-	public ExtraWork apply() {
-		validateOrThrow();
-		ExtraWork data = new ExtraWork();
-		data.setEditionId(editionId);
-		if (name != null && !name.isBlank())
-			data.setName(name);
-		if (deadline != null)
-			data.setDeadline(deadline);
-		postApply(data);
-		return data;
-	}
 }