OO-3303: Fix broken unit tests, add missing translations

src/main/java/org/olat/course/nodes/survey/_i18n/LocalStrings_de.properties

 condition.accessibility.title=Zugang
 course.node.link.text=Umfrage
 edit.choose=W\u00E4hlen, erstellen oder importieren
-edit.choose.questionnaire=Fragebogen ausw\u00E4hlen
+edit.choose.evaluation.form=Fragebogen ausw\u00E4hlen
 edit.edit=Bearbeiten
 edit.execution=Teilnahme druch
 edit.execution.by.owner=Besitzer

src/main/java/org/olat/course/nodes/survey/_i18n/LocalStrings_en.properties

 condition.accessibility.title=Access
 course.node.link.text=Survey
 edit.choose=Choose, create or import
-edit.choose.questionnaire=Choose questionnaire
+edit.choose.evaluation.form=Choose questionnaire
 edit.edit=Edit
 edit.execution=Participation by
 edit.execution.by.owner=Owners

src/main/java/org/olat/modules/forms/manager/EvaluationFormStorage.java

@@ -103,7 +103,7 @@ class EvaluationFormStorage {
 			log.warn("Cannot find absolute path to delete file of evaluation form response file. Path: " + relativePath, e);
 		}
 		if (absolutePath != null) {
-			deleteFiles(relativePath);
+			deleteFiles(absolutePath);
 		}
 	}
 

src/main/java/org/olat/modules/forms/model/jpa/EvaluationFormResponseImpl.java

@@ -150,7 +150,7 @@ public class EvaluationFormResponseImpl implements EvaluationFormResponse, Persi
 	}
 
 	public void setFileResponse(Path fileResponse) {
-		this.fileResponsePath = StringHelper.containsNonWhitespace(null)? fileResponse.toString(): null;
+		this.fileResponsePath = fileResponse != null? fileResponse.toString(): null;
 	}
 
 	@Override

src/test/java/org/olat/modules/forms/manager/EvaluationFormStorageTest.java

@@ -52,10 +52,10 @@ public class EvaluationFormStorageTest extends OlatTestCase {
 	public void clean() throws IOException {
 		Path responsesDir = sut.getResponsesRoot();
 		// Delete all files and directories
-	    Files.walk(responsesDir)
-	      .sorted(Comparator.reverseOrder())
-	      .map(Path::toFile)
-	      .forEach(File::delete);
+		Files.walk(responsesDir)
+			.sorted(Comparator.reverseOrder())
+			.map(Path::toFile)
+			.forEach(File::delete);
 	}
 	
 	@Test