Minor code style improvements using pylint tool.

lib/hawat/app.py

lib/hawat/base.py

lib/hawat/blueprints/auth_dev/__init__.py

lib/hawat/blueprints/auth_env/__init__.py

lib/hawat/blueprints/dashboards/__init__.py

lib/hawat/blueprints/design/__init__.py

lib/hawat/blueprints/devtools/__init__.py

lib/hawat/blueprints/events/__init__.py

lib/hawat/blueprints/filters/__init__.py

lib/hawat/blueprints/geoip/__init__.py

lib/hawat/blueprints/groups/__init__.py

lib/hawat/blueprints/help/__init__.py

lib/hawat/blueprints/networks/__init__.py

lib/hawat/blueprints/performance/__init__.py

lib/hawat/blueprints/reports/__init__.py

lib/hawat/blueprints/settings_reporting/__init__.py

lib/hawat/blueprints/settings_reporting/forms.py

lib/hawat/blueprints/skeleton/__init__.py

lib/hawat/blueprints/users/__init__.py

lib/hawat/blueprints/whois/__init__.py