#3672:added some validation rule for datetime
#3672:added some validation rule for datetime


git-svn-id: 38a968196956c66a3568cc1d2db20d3de461394a@11156 8bbc783d-d51a-0410-adab-8fa69d43f207

nishizoe/opCommunityTopicPlugin,nishizoe/opCommunityTopicAddFileLinkPlugin,tejimaya/opCommunityTopicPlugin