Local upload backend: Always use .ts extension

Now that we're doing that for both fast and full cuts.

cutter/cutter/upload_backends.py

@@ -227,8 +227,7 @@ class Local(UploadBackend):
 		video_id = str(uuid.uuid4())
 		# make title safe by removing offending characters, replacing with '-'
 		safe_title = re.sub('[^A-Za-z0-9_]', '-', title)
-		# If fast cut enabled, use .ts, otherwise use .mp4
-		ext = 'ts' if self.encoding_settings is None else 'mp4'
+		ext = 'ts'
 		filename = '{}-{}.{}'.format(safe_title, video_id, ext)
 		filepath = os.path.join(self.path, filename)
 		try: