Fixed get_option() in several places to use defaults and thereby avoid PHP notices and warnings.

git-svn-id: https://plugins.svn.wordpress.org/game-schedules/trunk@919018 b8457f37-d9ea-0310-8a92-e5e31aec5664
Preparing 4.1.1 release.

git-svn-id: https://plugins.svn.wordpress.org/game-schedules/trunk@919022 b8457f37-d9ea-0310-8a92-e5e31aec5664