revert dashboard graph with option

git-svn-id: https://plugins.svn.wordpress.org/feedly-insight/trunk@872227 b8457f37-d9ea-0310-8a92-e5e31aec5664
bump 0.9.10

git-svn-id: https://plugins.svn.wordpress.org/feedly-insight/trunk@872228 b8457f37-d9ea-0310-8a92-e5e31aec5664