Migrate upgrade stylelint from version 10 to 16 and fix all the
stylelint and prettier issues in scss files.
The following deprecated stylistic rules are no longer supported in
stylelint, and the checks are taken over by prettier:
- string-quotes
- max-empty-lines
- max-line-length
Migrate from the deprecated TSLint to Angluar ESLint. Also fix current
linting issues in the code, in particular:
- Use strict equals operators (=== and !==)
- Remove empty lifecycle methods (mostly ngOnInit)
- Output bindings including aliases should not be named as standard dom
events (submit)
- Async pipe results should not be negated