fixed few bugs.
added option to show contact form in modal from other plugins

git-svn-id: https://plugins.svn.wordpress.org/customizable-captcha-and-contact-us-form/trunk@956486 b8457f37-d9ea-0310-8a92-e5e31aec5664
Stable tag: 0.4 added in readme.txt

git-svn-id: https://plugins.svn.wordpress.org/customizable-captcha-and-contact-us-form/trunk@956488 b8457f37-d9ea-0310-8a92-e5e31aec5664