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/github/browser.py

@@ -199,6 +199,7 @@ class GithubBrowser(Browser):
 # TODO use a cache for objects and/or pages?
 # TODO use an api-key?
 
+
 def parse_date(s):
     if s.endswith('Z'):
         s = s[:-1]