Parameters page has no validation on fields

[previ]

"Parameters" page provide a simple way of altering configuration parameters, but does not currently provide any validation, so it is possible (and actually easy) to save an invalid configuration which break the coderbot software, making it unusable.

[avivace]

This can now be easily implemented in the schema definition of the API (v2.yml) and, possibily in the frontend, providing visual feedback about the form validation.

[previ]

Under implementation on the new frontend app. Closing this as v1 app will be deprecated and then removed.