Fix/handling breaking changes in ROR data structure

This MR contains a major bug fix

• ROR API for Helmholtz Association, shows that the type of some key-value pairs in the response object has changed. Namely the type of links is now an object. While the type value within each of the relationships object is in all complete lowercase, unlike the capitalized version before. The MR handles these breaking changes by updating the code on our end for these changes at the moment
• Additionally, the eslint configuration was simplified as suggested in the Next docs

closes #154