PEP8 (make qa) fixes for web/cobbler_web/views.py

web/cobbler_web/views.py:190:28: E711 comparison to None should be 'if cond is not None:'
web/cobbler_web/views.py:299:13: E711 comparison to None should be 'if cond is None:'
web/cobbler_web/views.py:448:17: E711 comparison to None should be 'if cond is None:'
web/cobbler_web/views.py:471:17: E711 comparison to None should be 'if cond is None:'
web/cobbler_web/views.py:494:17: E711 comparison to None should be 'if cond is None:'
web/cobbler_web/views.py:684:8: E714 test for object identity should be 'is not'
web/cobbler_web/views.py:718:20: E711 comparison to None should be 'if cond is None:'
web/cobbler_web/views.py:776:8: E714 test for object identity should be 'is not'
web/cobbler_web/views.py:1077:17: E711 comparison to None should be 'if cond is not None:'
web/cobbler_web/views.py:1089:8: E714 test for object identity should be 'is not'
web/cobbler_web/views.py:1133:12: E713 test for membership should be 'not in'
web/cobbler_web/views.py:1239:22: E711 comparison to None should be 'if cond is not None:'
PEP8 (make qa) fixes for cobbler/utils.py

cobbler/utils.py:217:8: E713 test for membership should be 'not in'
cobbler/utils.py:622:16: E713 test for membership should be 'not in'
cobbler/utils.py:657:24: E713 test for membership should be 'not in'
cobbler/utils.py:829:8: E713 test for membership should be 'not in'
cobbler/utils.py:870:13: E711 comparison to None should be 'if cond is None:'
cobbler/utils.py:1304:8: E713 test for membership should be 'not in'
cobbler/utils.py:1307:8: E713 test for membership should be 'not in'
cobbler/utils.py:1330:8: E713 test for membership should be 'not in'
cobbler/utils.py:1605:75: E502 the backslash is redundant between brackets
cobbler/utils.py:1609:73: E502 the backslash is redundant between brackets
cobbler/utils.py:1610:71: E502 the backslash is redundant between brackets
cobbler/utils.py:1614:85: E502 the backslash is redundant between brackets
PEP8 (make qa) fixes for cobbler/yumgen.py

cobbler/yumgen.py:59:12: E713 test for membership should be 'not in'
cobbler/yumgen.py:69:16: E713 test for membership should be 'not in'
cobbler/yumgen.py:75:16: E713 test for membership should be 'not in'