Update to using a taxonomy to track where things are imported from. Removes the postmeta (keyring_service).

BREAKING CHANGE.



git-svn-id: https://plugins.svn.wordpress.org/keyring-social-importers/trunk@772386 b8457f37-d9ea-0310-8a92-e5e31aec5664
Tag 1.4



git-svn-id: https://plugins.svn.wordpress.org/keyring-social-importers/trunk@772388 b8457f37-d9ea-0310-8a92-e5e31aec5664