Adding Increment/Decrement Error checks

You can't raise to more than you can bet, and you can't raise less than
the Ante.
Merge branch 'master' of https://github.com/newmanne/swanboxlibgdx
Fixed some layout stuff with the Raise Dialog

Made the incr/decr buttson bigger and centered the $$ label.
Merge branch 'master' of https://github.com/newmanne/swanboxlibgdx