add ExerciseTemplate conecpt, fix UI elements

WorkoutsPlus/SampleData.swift

@@ -19,7 +19,7 @@ class SampleData {
 		}
 		
 		private init() {
-				let schema = Schema([Exercise.self, Workout.self])
+				let schema = Schema([Exercise.self, ExerciseTemplate.self, Workout.self])
 				let modelConfiguration = ModelConfiguration(schema: schema, isStoredInMemoryOnly: true)
 				
 				do {
@@ -31,19 +31,15 @@ class SampleData {
 		}
 		
 		func insertSampleData() {
-				// Erstellt ein Dictionary, um Übungen nach Namen nachzuschlagen
-				var exercisesDict = [String: Exercise]()
-				
-				// Alle Übungen in der Datenbank speichern und im Dictionary ablegen
-				for exercise in Exercise.sampleData {
-						if exercisesDict[exercise.name] == nil {
-								context.insert(exercise)
-								exercisesDict[exercise.name] = exercise
-						}
+				for exerciseTemplate in ExerciseTemplate.sampleData {
+						context.insert(exerciseTemplate)
 				}
 				
-				// Workouts erstellen und dabei vorhandene Übungen referenzieren
-				for workout in Workout.sampleData(using: exercisesDict) {
+				for exercise in Exercise.sampleData {
+						context.insert(exercise)
+				}
+				
+				for workout in Workout.sampleData {
 						context.insert(workout)
 				}