Disable dieLabel and rollDieButton because they currently serve no purpose other than looking cool.
Added copy of triggerEffect() that passes in a StringBuilder.
Fixed NullPointer during store menu.
Fixed NullPointerException in Store
Made itemPanels "invisible", because they serve no purpose.
Removed Integer.parseInt() in some places to avoid NumberFormatException.
Used StringBuilder to print output to textArea
Used StringBuilder to print output to OutputTextArea and implemented in BoardGUI.