Jetpack: Bump to 3.2-beta3

Changes expanded: https://github.com/Automattic/Jetpack/compare/3.2-beta1...3.2-beta3



git-svn-id: https://plugins.svn.wordpress.org/jetpack/trunk@1008014 b8457f37-d9ea-0310-8a92-e5e31aec5664