rework JavaScript: less global scope variables, remove old code

git-svn-id: https://plugins.svn.wordpress.org/cforms2/trunk@1013693 b8457f37-d9ea-0310-8a92-e5e31aec5664
fix recently intrduced flexigrid problem and format some weird JavaScript

git-svn-id: https://plugins.svn.wordpress.org/cforms2/trunk@1013914 b8457f37-d9ea-0310-8a92-e5e31aec5664
version 14.6.8

git-svn-id: https://plugins.svn.wordpress.org/cforms2/trunk@1013919 b8457f37-d9ea-0310-8a92-e5e31aec5664