EA crashes when saving attribute constraint with single quote

[Geert Bellekens]

Details:

If you want to save an attribute constraint containing a single quote, and there is already one with the same name, EA crashes hard.

Steps to reproduce
- Create attribute constraint with name "constraint'" and save
- Create a new attribute constraint on the same attribute, with the same name
- Click on save
- EA then first asks you if you want to overwrite the existing one, but hen comes back with an SQL exception and finally crashes.

Reported

Geert