Blueprint: Validate Blueprint name is not empty (HMS-3801)

[ezr-ondrej]

We are now validating Blueprint name on the backend to be non-empty. Adds same validation for frontend

Refs HMS-3801

[regexowl]

The code looks good to me, one very nit picky question - do we want to set the minimal length to three? As that's what the current regex allows even thought the helper text insists 1-100 characters are possible:

Other option would be to adjust the regex for example with a non-capturing optional group so we really do allow 1 or 2 char names.

[regexowl]

Maybe something like this? ^[a-zA-Z0-9](?:[a-zA-Z0-9-_ ]*[a-zA-Z0-9])?$

Could be also probably simplified to ^[a-z0-9](?:[a-z0-9-_ ]*[a-z0-9])?$ since the test is set as case insensitive.

[ezr-ondrej]

/retest

[regexowl]

Thank you!

[regexowl]

/retest