search: add self clear on clear button

git-svn-id: https://plugins.svn.wordpress.org/feedly-insight/trunk@848790 b8457f37-d9ea-0310-8a92-e5e31aec5664
search: output css move to action

git-svn-id: https://plugins.svn.wordpress.org/feedly-insight/trunk@848791 b8457f37-d9ea-0310-8a92-e5e31aec5664
0.3.4 bump

git-svn-id: https://plugins.svn.wordpress.org/feedly-insight/trunk@848792 b8457f37-d9ea-0310-8a92-e5e31aec5664