Small update to make the imageurl field bigger in the database

git-svn-id: https://plugins.svn.wordpress.org/tradetracker-store/trunk@1003475 b8457f37-d9ea-0310-8a92-e5e31aec5664
forgot a file

git-svn-id: https://plugins.svn.wordpress.org/tradetracker-store/trunk@1003476 b8457f37-d9ea-0310-8a92-e5e31aec5664