Put now isn't allowed to change ids

ref #4

src/controllers/TrackController.ts

@@ -64,7 +64,11 @@ export class TrackController {
 		let oldTrack = await this.trackRepository.findOne({ id: id });
 
 		if (!oldTrack) {
-      throw new TrackNotFoundError();
+      		throw new TrackNotFoundError();
+		}
+
+		if(oldTrack.id != track.id){
+			throw new NotAcceptableError("The id's don't match!");
 		}
 
 		await this.trackRepository.update(oldTrack, track);