MyView: Add inputmap/actionmap on Load button.
MyView: Removed action/input mapping. 
Not the best way to do this.
MyController: Outline of method to remove the selected roles.
MyTreeRenderer: Enable permission tool tips.
MyTreeRenderer: Removed new line from tooltips.
MyController: Complete 'removeSelected' method.
MyTableModel: Fix bug in RemoveArray method. 
Originally used fireTableRowsDeleted method but this caused inconsistent
results as it 'deleted' rows from the end of the array and the table
forget the current sorting. Changed this to either fireTableDataChanged
with data or fireTableRowsDeleted with no data.
MyView: Remove Roles button. 
Rename 'Load LHS' and 'Load RHS' to simply 'Load'.