code optimize

git-svn-id: https://plugins.svn.wordpress.org/feedly-insight/trunk@919072 b8457f37-d9ea-0310-8a92-e5e31aec5664
Bug fix ( Fatal error Jetpack

git-svn-id: https://plugins.svn.wordpress.org/feedly-insight/trunk@919073 b8457f37-d9ea-0310-8a92-e5e31aec5664
bump 0.9.13

git-svn-id: https://plugins.svn.wordpress.org/feedly-insight/trunk@919074 b8457f37-d9ea-0310-8a92-e5e31aec5664