Resolve "Submissions full export"

Closes #69 (closed) Nice

Adds option to export all submissions in an edition. To use go to /edition/{id}/export/submissions

src/main/java/nl/tudelft/submit/controller/EditionController.java

@@ -528,6 +528,18 @@ public class EditionController {
 		return csvService.getResponse(exportService.exportGradesForEdition(id, options));
 	}
 
+	/**
+	 * Gets a CSV file which contains all submissions in the edition.
+	 *
+	 * @param  id The id of the edition
+	 * @return    The resource of the export file
+	 */
+	@GetMapping("{id}/export/submissions")
+	@PreAuthorize("@authorizationService.hasTeacherRoleInEdition(#id)")
+	public ResponseEntity<Resource> exportSubmissions(@PathVariable Long id) throws IOException {
+		return csvService.getResponse(exportService.exportSubmissionsForEdition(id));
+	}
+
 	/**
 	 * Imports participants into an edition
 	 *
@@ -547,4 +559,5 @@ public class EditionController {
 				new InputStreamReader(file.getInputStream(), StandardCharsets.UTF_8), participantImport);
 		return "redirect:/edition/{fromPage}/{id}";
 	}
+
 }