Cache was not cleared properly in 0.5.8: fixed

git-svn-id: https://plugins.svn.wordpress.org/papercite/trunk@856335 b8457f37-d9ea-0310-8a92-e5e31aec5664
Merge branch 'master' into svn

git-svn-id: https://plugins.svn.wordpress.org/papercite/trunk@857214 b8457f37-d9ea-0310-8a92-e5e31aec5664
Stable version is 0.5.10

git-svn-id: https://plugins.svn.wordpress.org/papercite/trunk@857218 b8457f37-d9ea-0310-8a92-e5e31aec5664
Merge branch 'master' into svn

git-svn-id: https://plugins.svn.wordpress.org/papercite/trunk@857715 b8457f37-d9ea-0310-8a92-e5e31aec5664
Merge branch 'master' into svn

git-svn-id: https://plugins.svn.wordpress.org/papercite/trunk@857716 b8457f37-d9ea-0310-8a92-e5e31aec5664
Stable version is 0.5.11

git-svn-id: https://plugins.svn.wordpress.org/papercite/trunk@857718 b8457f37-d9ea-0310-8a92-e5e31aec5664