"null" as a string the default empty value of required string fields

[matthewmueller]

Possible solutions:

• Default to an empty string
• Show red that it's an invalid value

[sdnts]

@matthewmueller This is a regression. For required fields, the "cleared" value is supposed to be an empty string (since it is more common to want to do that)

[sdnts]

fixed on latest dev