ER Modeler enhancements (Revision #4)

Need to add more functionality for Merging and Comparing ER Models, including the merging of reverse engineering of a server.

• Renaming Objects - Latest version of ADS has options to rename ER objects.

• If i select an object and click Function key 'F2'  it should allow the user to rename objects

• Delete Key - Selecting an entity, either in the tree, or the white space, and then hitting the "delete" key should produce the same effect as right clicking it and selecting delete