Setup tentative model for MovieStore.
Moved Location properties of Customer to a separate class.
Added lots of natural queries.
Created MovieStoreRunner.
Finished up some of the model features.
Created views package for MovieStoreGUI.
Started to implement the CustomerPanel.
Created a general ScrollPanel that can be used to scroll through
diffent kinds of models.
Made a few small changes to the view.
Moved CustomarySummaryPanel out of Customer Panel. 
Switched to GridBagLayout.
Added Transaction and TransactionType classes to monitor the
checking in and checking out of movies.
Created Test classes for the Model elements.
Added methods for providing sample data to the GUI.
Added Transaction model test class, with a method for creating
dummy data.
Create CustomerHistoryPanel for a tabular display of 
Transactions.
Adjusted the Store class to provide more consistent starting points
for queries (moved from HashMap to simple ArrayLists).
Encapsulated status objects in MovieInstance instead of HashMap.
Added StockPanel class to keep track of MovieInstance counts and types.
Started implementing Transaction class.
Started TransactionPanel to list transactions by Customer and allow for
new Transactions to be created.
Changed CustomerPanel to allow for scrolling through Customers and 
presenting their history.
Created a scroll box widget for swing.
fixed bugs.
added a test class that runs a small frame with ScrollWidget components.