* add prettier and have it format all js code except website:
:
* trying running prettier check in CI
* fix runs on in CI
* change CI job name
* fix prettier erros and fix CI
* updated typescript version and tsconfig in project
* updated eslint version
* change from experimental export to supported export
* removed accidentally added script
* turn off buggy jsx-a11y eslint rules
* remove unused tslint.json
* fix wrong jsx-a11y depedency
* use correct eslint-plugin-jsx-a11y version
* fix rest of linting errors
* move back js-yaml version to 3 major
- Replace uses of deprecated Bourbon helpers with raw CSS
- Add autoprefixer into the build chain to prefix the now removed helpers
This process was achieved by running through each of the deprecation warnings and using the following bash function to replace it in all files:
```
function bourbon-deprecate() {
grep -rl "@include $1" ./frontend --exclude-dir=.git | xargs sed -i '' -E "s/@include $1[(](.*)[)]/$1: \1/g"
}
```
For some helpers, this did not result in valid CSS, so manual modifications were made.
Closes#1189#1274
