Improve errors reporting in edit modal

[MisRob]

Summary

Currently, we use a generic message displayed on the top of the edit modal to communicate errors. That can be confusing especially when a problematic field is out of view. A user needs to scroll down to find out what is wrong.

Example - a missing license:

Let's improve it.

Real-life consequences

Confusing UX. It can be a problem especially for historical data that don't have a license even when it's required due to looser validation of the old Studio.

[MisRob]

As discussed with @jessicaaceret and @rtibbles, a first iteration could be to add a list of links to problematic fields underneath the generic error message. Although it goes against some of our design principles, it would allow us to release it as soon as possible to help people experiencing problems with historical data. This solution doesn't require new translation strings. For this first version. no new designs would be needed.