Update ESLint config when eslint-plugin-import is updated

[beausmith]

After #174 is merged and once eslint-plugin-import is updated…

Issues/PRs

import-js/eslint-plugin-import#1120
import-js/eslint-plugin-import#1282
import-js/eslint-plugin-import#1304

TODO

• upgrade eslint-plugin-import. Current version:2.16.0.
• remove typescript-eslint-parser
• remove workaround using: jsExtensions, tsExtensions, allExtensions
• remove // eslint-disable-line import/named from all type exports