Resource Bundle Editor: fall-back to default value feedback not displayed correctly

In HSTTWO-2720 functionality is added to the resource bundle editor to explicitly define a property to be empty or 'null'. When absent (null) the default value is to be used.

The editor has the following issues with the new functionality

• The 'enabled' column is empty in preview mode, not showing what is enabled. See attachment. Either the column values are shown correctly or the column must not be displayed.
• The name 'Enabled' is incorrect. A value does not get enabled or disabled.
• The new enable/disable functionality is not documented and not in the documentation-screenshots.
• The label [<missing>] is confusing [1]. It is not missing as you explicitly set it to use the default. Propose to use [<default>] to indicate the default is used. (other option is null, this is well known as it is the SQL standard to indicate an absent value)

[1] webster definition of missing: needed or expected but not included