Update pep8 to 1.5.7

requirements/edx/base.txt

@@ -127,7 +127,7 @@ mock==1.0.1
 nose-exclude
 nose-ignore-docstring
 nosexcover==1.0.7
-pep8==1.4.5
+pep8==1.5.7
 pylint==0.28
 python-subunit==0.0.16
 rednose==0.3

setup.cfg

@@ -16,5 +16,5 @@ no-path-adjustment=1
 #pdb=1
 
 [pep8]
-ignore=E501
+ignore=E501,E265
 exclude=migrations