Creator does not ensure the subset has only alphabetical characters

[BigRoy]

Currently the instance creator does not ensure the subset has a name consisting only of alphabetical characters, any symbol, space or special characters seems to be allowed in the Creator.

Is this ok to be generic and abstract? Or should it never allow so to begin with?

For example, should a space even be allowed? Or more specific, what characters should be?

[mottosso]

It should be the case that bad names cannot make it into the database, due to this

Currently the allowed characters are ^[a-zA-Z0-9_.]*$. We should get that filter into the UI as well.

[BigRoy]

It should be the case that bad names cannot make it into the database, due to this.

Perfect. Thanks for pointing that out, good to know. That should definitely find its way into the UI too.

[davidlatwe]

On UX part, this could be related to #179, and with the implementation in #444, use reddish border-color to indicate invalid subset name.

Will submit another PR to resolve this, after #444 is merged.