Add isset to widget form variables

git-svn-id: https://plugins.svn.wordpress.org/raise-the-money/trunk@952509 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update changelog and bump version to 0.2

git-svn-id: https://plugins.svn.wordpress.org/raise-the-money/trunk@952510 b8457f37-d9ea-0310-8a92-e5e31aec5664