jetpack: create multiuser branch

git-svn-id: http://plugins.svn.wordpress.org/jetpack/branches/multiuser@589920 b8457f37-d9ea-0310-8a92-e5e31aec5664
jetpack multiuser: add storage for multiple user tokens

git-svn-id: http://plugins.svn.wordpress.org/jetpack/branches/multiuser@589922 b8457f37-d9ea-0310-8a92-e5e31aec5664
jetpack multiuser: create the new user_tokens and master_user options when registering the blog + user

git-svn-id: http://plugins.svn.wordpress.org/jetpack/branches/multiuser@589929 b8457f37-d9ea-0310-8a92-e5e31aec5664
jetpack multiuser: add link to jetpack admin page for unconnected users to connect

git-svn-id: http://plugins.svn.wordpress.org/jetpack/branches/multiuser@592416 b8457f37-d9ea-0310-8a92-e5e31aec5664
jetpack multiuser: merge from trunk

git-svn-id: http://plugins.svn.wordpress.org/jetpack/branches/multiuser@592441 b8457f37-d9ea-0310-8a92-e5e31aec5664
jetpack multiuser: add user_login to authorization URL for better user messaging; stop trying to activate modules when only connecting a user.

git-svn-id: http://plugins.svn.wordpress.org/jetpack/branches/multiuser@593080 b8457f37-d9ea-0310-8a92-e5e31aec5664
jetpack multiuser: merge trunk

git-svn-id: http://plugins.svn.wordpress.org/jetpack/branches/multiuser@595076 b8457f37-d9ea-0310-8a92-e5e31aec5664
jetpack multiuser: add user unlink button

git-svn-id: http://plugins.svn.wordpress.org/jetpack/branches/multiuser@595080 b8457f37-d9ea-0310-8a92-e5e31aec5664
jetpack multiuser: do not show unlink_user button for master user

git-svn-id: http://plugins.svn.wordpress.org/jetpack/branches/multiuser@595096 b8457f37-d9ea-0310-8a92-e5e31aec5664
jetpack multiuser: merge from trunk

git-svn-id: http://plugins.svn.wordpress.org/jetpack/branches/multiuser@595110 b8457f37-d9ea-0310-8a92-e5e31aec5664