Duplicate resource names via renaming

[yvespp]

On resource creation via JSF UI the resource name check doesn't allow the same name with different case.
But on renaming a resource via UI (edit name property on the resource) the same name with different case is allowed.
Example:

• Create app: myApp
• Create app: MyApp => error
• Create app: MyApp1
• Edit MyApp1 and change name to MyApp => works, but shouldn't

Resource with the same name but different case shouldn't be allowed.