Prepared release 1.8, compatible with WP 4.0

git-svn-id: https://plugins.svn.wordpress.org/3d-viewer-configurator/trunk@1005644 b8457f37-d9ea-0310-8a92-e5e31aec5664
Prepared release 1.8.1

git-svn-id: https://plugins.svn.wordpress.org/3d-viewer-configurator/trunk@1005647 b8457f37-d9ea-0310-8a92-e5e31aec5664