Pin eslint and friends to versions used by Nate to avoid `peer invalid: ajv@^5.0.0, required by ajv-keywords@2.1.1`
Pin eslint and friends to versions used by Nate to avoid `peer invalid: ajv@^5.0.0, required by ajv-keywords@2.1.1`

sharelatex/chat-sharelatex,sharelatex/chat-sharelatex