Fixes #22724 - Update and pin patternfly-react

• update and pin patternfly-react to v1.11.0
• update tests snapshots

Fixes #21999,#22005 - Migrate toasts to pf-react

• Replace Alert and Toasts components with patternfly-react
• Refactor the server side flash-notification
• Allow rails-flah-notification to react-toast-notification with link

Fixes #22092 - refactor lodash usage

convert imports to be more spesific
prefer not to use lodash whenever possible

Fixes #21725 - Move test config to setup file

This moves the redundant test setup code to a single file.

http://projects.theforeman.org/issues/21725

Fixes #21624 - eslint update to airbnb-base

Replace existing custom rules with airbnb-base config.
Eventually we'll want to to move to the full airbnb config
with react and a11y.

http://projects.theforeman.org/issues/21624

Fixes #21630 - Add colocation for storybook stories

This moves the storybooks stories to colocate with the
corresponding component file. This makes it a little
nicer to manage and follows the pattern in the patternfly-react
repository.

http://projects.theforeman.org/issues/21630

Fixes #21160: Upgrade to React@16

This PR is to prepare for and merge React@16.0.0

The current Foreman code is compliant with React@15.6.2
which means everything should work with React@16.

http://projects.theforeman.org/issues/21160

Fixes #21179 - Upgrade to enzyme@3.0.0

Enzyme needs to be upgraded to support react@16. In upgrading I
found that using jest's snapshot feature would greatly improve
several of the tests that were in place. I've changed these
tests to use snapshots and added enzyme-to-json to support...

fixes #20275 - add css linter support

this also fix all css linter issues across.

Fixes #19502 - fix react warnings