Loan return, inventory, and lend projects functional.

Renamed project to Enterprise_Item_Loan and individual projects to
SQLLoanAdmin, SQLLoanCheckIn, SQLLoanCheckOut to relect modular intentions.

-Dependencies refrected by netbeans

Added text validation to text fields using regular expressions.

-certain user inputs are now refused or not passed to data access object.
-only for pay fine and check in functions others unchanged