BLD-967: Fix regExp.

CHANGELOG.rst

@@ -5,6 +5,8 @@ These are notable changes in edx-platform.  This is a rolling list of changes,
 in roughly chronological order, most recent first.  Add your entries at or near
 the top.  Include a label indicating the component affected.
 
+Blades: Fix Youtube regular expression in video player editor. BLD-967.
+
 Blades: Fix displaying transcripts on touch devices. BLD-1033.
 
 Blades: Tolerance expressed in percentage now computes correctly. BLD-522.

common/lib/xmodule/xmodule/video_module/video_module.py

@@ -37,6 +37,7 @@ from .video_handlers import VideoStudentViewHandlers, VideoStudioViewHandlers
 
 from urlparse import urlparse
 
+
 def get_ext(filename):
     # Prevent incorrectly parsing urls like 'http://abc.com/path/video.mp4?xxxx'.
     path = urlparse(filename).path