IdentifiableItemCodec should ignore case when sorting keys

Input parameter sequence of constructor of generated type or builder follows alphabetical and case-insensitive order, which differs with IdentifiableItemCodec expectation.

IdentifiableItemCodec.java: 

(q1, q2) -> q1.getLocalName().compareTo*IgnoreCase*(q2.getLocalName()

ClassTempate.xtend:

Collections.sort(sorted, [p1, p2|
p1.name.compareTo(p2.name)
]);

BuilderTemplate.xtend

«Collections.sort(keyProps,
[ p1, p2 |
return p1.name.compareTo(p2.name)
])
»