fixed placeholder and import button

git-svn-id: https://plugins.svn.wordpress.org/si-contact-form/trunk@783567 b8457f37-d9ea-0310-8a92-e5e31aec5664
update pot

git-svn-id: https://plugins.svn.wordpress.org/si-contact-form/trunk@783569 b8457f37-d9ea-0310-8a92-e5e31aec5664
optimize force import

git-svn-id: https://plugins.svn.wordpress.org/si-contact-form/trunk@783572 b8457f37-d9ea-0310-8a92-e5e31aec5664
forgot to upload the new files

git-svn-id: https://plugins.svn.wordpress.org/si-contact-form/trunk@783624 b8457f37-d9ea-0310-8a92-e5e31aec5664