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/quvi/test.py

@@ -45,4 +45,3 @@ class QuviTest(BackendTest):
         assert len(v.url)
         assert len(v.title)
         assert v.page_url.startswith('http://www.youtube.com/watch?v=BaW_jenozKc')
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