Right-clicking on the add tab tab no longer brings up a context menu,
preventing the user from removing it.
Changed property conversion to use BigIntegers for Colors to allow alpha
byte to be set.
Added tooltips to tabs, persistant user names.

Added tooltips to tabs with tab description.

User name is now saved on exit and used when restarting instead of
prompting every time.
Changed loadProperties model.

Changed loadProperties to use a Properties argument instead of calling
TriviaClient. This will allow easier use of panels with color chooser to
demonstrate changes without changing the actual properties immediately.