delete all file at once

git-svn-id: https://plugins.svn.wordpress.org/sliding-contact-form-by-formget/trunk@884001 b8457f37-d9ea-0310-8a92-e5e31aec5664
import all file 

git-svn-id: https://plugins.svn.wordpress.org/sliding-contact-form-by-formget/trunk@884002 b8457f37-d9ea-0310-8a92-e5e31aec5664