Revision 509199

Fixed DIRSTUDIO-7 (OID View).
Refactored Hierarchy View and Schemas View.
Removed Sort Actions for both Views.
Added to Hierarchy View :
	o A Sorting Dialog
	o A preference page for label preferences.

Hierarchy View can now be sorted by First Name or by OID (ascending and descending) and grouped by OC first, AT first or mixed.

Labels for AT and OC can now be First Name, All aliases or OID. A secondary label can be added to display another information.

The icon of the Hierarchy View has been changed.