pep8 blank lines fixes

flake8 --select W391,E302,E301,E304

autopep8 can't fix W391 even though it claims it can.
Fixed using a simple custom script.

modules/gdcvault/pages.py

@@ -79,6 +79,8 @@ class IndexPage(Page):
 
 # the search page class uses a JSON parser,
 # since it's what search.php returns when POSTed (from Ajax)
+
+
 class SearchPage(Page):
     def iter_videos(self):
         if self.document is None or self.document['data'] is None:
@@ -90,6 +92,7 @@ class SearchPage(Page):
                 continue
             yield video
 
+
 class VideoPage(Page):
     def get_video(self, video=None):
         # check for slides id variant