X and Y labels added

git-svn-id: https://plugins.svn.wordpress.org/wp-business-intelligence-lite/trunk@1000597 b8457f37-d9ea-0310-8a92-e5e31aec5664
Stable tag is 1.5

git-svn-id: https://plugins.svn.wordpress.org/wp-business-intelligence-lite/trunk@1000601 b8457f37-d9ea-0310-8a92-e5e31aec5664