Bug fix related to Excel Internet Query export

git-svn-id: https://plugins.svn.wordpress.org/contact-form-7-to-database-extension/trunk@981632 b8457f37-d9ea-0310-8a92-e5e31aec5664
Description update

git-svn-id: https://plugins.svn.wordpress.org/contact-form-7-to-database-extension/trunk@981640 b8457f37-d9ea-0310-8a92-e5e31aec5664
Description update

git-svn-id: https://plugins.svn.wordpress.org/contact-form-7-to-database-extension/trunk@981643 b8457f37-d9ea-0310-8a92-e5e31aec5664