Update to v0.31.0 - bugfix release

git-svn-id: https://plugins.svn.wordpress.org/wp-symposium-toolbar/trunk@981850 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update to v0.31.0 - bis repetita and fr_FR translation

git-svn-id: https://plugins.svn.wordpress.org/wp-symposium-toolbar/trunk@981864 b8457f37-d9ea-0310-8a92-e5e31aec5664