Mark as merged.
Merge branch 'master' of
https://github.com/genericsystem/genericsystem2011.git

Conflicts:
	genericsystem-impl/src/main/java/org/generic/map/AbstractMapProvider.java
Merge branch 'master' of https://github.com/genericsystem/genericsystem2011.git
- Fix bugs of GUI :
	- remove the '+' if the holder is singular
	- when creating an attribute by drag & drop, refresh the tree view
	- when renaming an attribute or a relation, make its primary implicit
Add a query iterator.
Add/modify functions to get a type or a subtype.