reset.css removed, refs #1324

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| Refs tickets  | #1324
| License       | MIT
| Doc PR        | -

Note: Bootstrap uses normalize.css, so reset.css is not needed.