Fixes for bugs #36, #37 and #39

git-svn-id: https://plugins.svn.wordpress.org/papercite/trunk@663079 b8457f37-d9ea-0310-8a92-e5e31aec5664
Version 0.4.3

git-svn-id: https://plugins.svn.wordpress.org/papercite/trunk@663081 b8457f37-d9ea-0310-8a92-e5e31aec5664