Improved the two current tab views to join and host so the buttons and
text fields are of reasonable size and centered in the window. Improved
the post join waiting message to include the host IP if the
player is choosing to host.  Removed system.exit calls under the catch
statements in the play function when starting a client so the user can
return to the GUI on poor or miss-timed input.
Merge branch 'master' of https://pyrotech911@github.com/pyrotech911/TSPSmashArena.git