- Added VIEW SCHEMA Feature:
	* This Feature Opens a new window that displays a Tree which represents all the tables that exist in the schema.
	* You can select any of the tables in the schema and click on the VIEW DATA button to display the table's tuples and its data.

- Added OPEN SCHEMA and SAVE SCHEMA buttons (NOT YET FUNCTIONAL)
	* These buttons will allow to save the schema with all its tables so that it can be opened in the future without having to write SQL.