More meaningful messages displayed when the plugin fails to switch the language.
Support details changed.


git-svn-id: https://plugins.svn.wordpress.org/wptb-language/trunk@1014297 b8457f37-d9ea-0310-8a92-e5e31aec5664
The readme file updated.

git-svn-id: https://plugins.svn.wordpress.org/wptb-language/trunk@1014298 b8457f37-d9ea-0310-8a92-e5e31aec5664