Remove stray functions

git-svn-id: https://plugins.svn.wordpress.org/instamojo/trunk@885770 b8457f37-d9ea-0310-8a92-e5e31aec5664
Move function for relevant visiblity

git-svn-id: https://plugins.svn.wordpress.org/instamojo/trunk@885771 b8457f37-d9ea-0310-8a92-e5e31aec5664
Add documentation

git-svn-id: https://plugins.svn.wordpress.org/instamojo/trunk@885772 b8457f37-d9ea-0310-8a92-e5e31aec5664
Change tab name for shortcode generator

git-svn-id: https://plugins.svn.wordpress.org/instamojo/trunk@885774 b8457f37-d9ea-0310-8a92-e5e31aec5664