add scrooge sentry
fix flake8
remove needless comments
move url to setting
Merge branch 'develop' into feature/add-scrooge-sentry-logger

Conflicts:
	src/ralph_pricing/app.py
	src/ralph_pricing/management/commands/pricing_sync.py
merge with develop
fix tests
manually install ralph
fix .trafis.yml
add unverified for ipaddr
fix install ralph in travis
add manually asset install
change travis file
add external and unverified to new yaml file
install ralph with my repo
Merge branch 'release/2.1.0' into feature/add-scrooge-sentry-logger

Conflicts:
	.travis.yml
Fix tests for raven

- If tests are run then import raven is disable
- Fix imports in test_cailometer
Merge pull request #113 from kula1922/feature/add-scrooge-sentry-logger

Feature/add scrooge sentry logger