OSDPL Functionality: custom error checking malfunctions when editing design pattern

If editing an existing design pattern, submitting a valid pattern can give error messages for required fields even though the required field already has valid information previously entered.

To duplicate:

• edit a valid design pattern.
• don't modify anything and Submit.
• error messages will appear at top.

To fix, look at the error handling code for the Design Pattern content type and add a check for existing values as part of the validation.