* Showing Yearly sales
* Tested with WP 4.0.1
* Added some initializations
* Fixed some notices.
* Added an error message at the top when no ecommerce platform/plugin was detected.

git-svn-id: https://plugins.svn.wordpress.org/ecommerce-dashboard/trunk@1037408 b8457f37-d9ea-0310-8a92-e5e31aec5664