Prepare for v7 plugin

git-svn-id: https://plugins.svn.wordpress.org/sexybookmarks/trunk@965393 b8457f37-d9ea-0310-8a92-e5e31aec5664
Catching up SexyBookmarks slug to Shareaholic v7.5.0.4

git-svn-id: https://plugins.svn.wordpress.org/sexybookmarks/trunk@965399 b8457f37-d9ea-0310-8a92-e5e31aec5664