Mark as translatable, and add French translation courtesy of Boris Rannou

git-svn-id: https://plugins.svn.wordpress.org/ajax-campaign-monitor-forms/trunk@816966 b8457f37-d9ea-0310-8a92-e5e31aec5664
Bump (v1.1)

git-svn-id: https://plugins.svn.wordpress.org/ajax-campaign-monitor-forms/trunk@816968 b8457f37-d9ea-0310-8a92-e5e31aec5664