Fixed alt key in contributor name and contributor number input elements. Contributor name input had altkey = Contributor Number and Contributor Number had altkey = Contributor Name
Now, create in Create Contributor Dispatch Action catches a domain exception that means that contributor name already exists. The error message in domain exception will appear in the interface. Closes #238
Added invalid contributor name message
Refactor - Changed Action Errors to Action Messages to use non-deprecated classes to put errors in page
Merge pull request #239 from samfcmc/bug/398925

Bug/398925 Now method create in Create Contributor Dispatch Action returns an error message instead of throwing an exception