* Update chat container of Connect
- Rename certain class names to improve BEM syntax and naming
- Update typography of message cells
- Update header of message area
- Use new 'info' icon to expand sidebar
- Update form fields for both writing and editing a message
- Implement Crayons styling for 'delete' modal
https://github.com/thepracticaldev/dev.to/issues/8437
* Update some tests aand class names
* Update tests
* adding more tests
- covers article.jsx and elements created from its props and state
- added png as static file that needs stubbing
* video + channelDetails test coverage
* chat + channels tests
* channels cc refactor
* yarn install
* update snapshot and string spacing
* chat.jsx test
mostly tests rendering elements
- does not test imported components, as those are already tested separately
- does not imported functions from actions or utils as those will be tested separately as well
* cleaning up
- mocked response with flush promises for state/component to reflect appropriate changes
* snapshot updates
