Added the mechanism to poll /myturn to reload the page if it is finally your turn

Added the mechanism to poll /myturn to reload the page if it is finally
your turn. Also, polls the /myturn if it is a new game saying that you
are waiting for an opponent to start.
Merge branch 'master' of https://github.com/sdavids13/checkers

Conflicts:
	src/main/webapp/WEB-INF/views/game.jsp