NullPointerException if all operations are sent null

[duclad]

crudui/add-on/src/main/java/org/vaadin/crudui/form/AbstractAutoGeneratedCrudFormFactory.java

Line 366 in 8dab7ee

operationButton.addClickShortcut(Key.ENTER);

Perhaps move this line down few lines where is the if for operationButton

[alejandro-du]

@duclad - Thanks for reporting this alongside the potential fix. I can go ahead and implement the suggestion, but I'd like to give you the chance to contribute the patch if you want. Please let me know.