Bug/lint config fix

[zacktraczyk]

Problem

The linting failed on my local machine and pipeline.

• TS linting gave this React warning:
  Warning: React version not specified in eslint-plugin-react settings. See https://github.com/jsx-eslint/eslint-plugin-react#configuration
• SCSS linting gave this error:
  When linting something other than CSS, you should install an appropriate syntax, e.g. "postcss-scss", and use the "customSyntax" option

Solution

• The React version needed to be specified. I Used the latest option (Github Issue).
• The new version of stylelint (v14) requires a PostCSS syntax package. You can add this configuration manually, but thought it was a better option to just use a standard config and extend our rules as that is what the stylelint-scss repo recommends. Then I added two scss linting settings (selector-class-pattern to allow the __ in the classname selectors and no-missing-end-of-source-newline to remove the requirement for newlines at the end of every scss file.
  (Github Issue).

Change Summary:

• Fix ts and scss lint config

Images/Important Notes (optional):

• I removed the stylelint-scss package
• I added the stylelint-config-standard-scss package