Plugin framework implemented

git-svn-id: https://plugins.svn.wordpress.org/wpfront-scroll-top/trunk@863631 b8457f37-d9ea-0310-8a92-e5e31aec5664
Plugins page changes.

git-svn-id: https://plugins.svn.wordpress.org/wpfront-scroll-top/trunk@864399 b8457f37-d9ea-0310-8a92-e5e31aec5664
Pointing to version 1.1.1

git-svn-id: https://plugins.svn.wordpress.org/wpfront-scroll-top/trunk@864406 b8457f37-d9ea-0310-8a92-e5e31aec5664
1.2 - text button, bug fixes.

git-svn-id: https://plugins.svn.wordpress.org/wpfront-scroll-top/trunk@868124 b8457f37-d9ea-0310-8a92-e5e31aec5664