style(lint): fix ALL linter errors

[redallen]

Our linter has been disabled on builds until #1409. The following errors still need to be addressed before it can be turned back on:

• 318 camelcase (style(lint): fix camelcase errors #1412)
• 234 import/no-extraneous-dependencies ( style(extraneous): fix 234 import/no-extraneous-dependencies errors #1414)
• 138 react/require-default-props
• 80 react/prefer-stateless-function
• 49 react/prop-types
• 26 no-unused-vars
• 26 import/no-unresolved
• 8 jest/valid-expect
• 5 react/no-find-dom-node
• 3 react/default-props-match-prop-types
• 3 prefer-destructuring
• 3 no-nested-ternary
• 2 consistent-return
• 1 react/no-unused-state
• 1 react/no-did-mount-set-state
• 1 no-template-curly-in-string
• 1 no-restricted-globals
• 1 no-debugger
• 1 jsx-a11y/no-redundant-roles
• 1 class-methods-use-this

Run yarn lint in the package root to see all these errors in detail and start working on them.

[redallen]

Fixed in #2086 thanks to @jeff-phillips-18 🎶 !!