Bug 933699 - TabView.uninit() leaks the TabView window r=gijs

From eb90c41f6a6d3f1b2d9d4dcbfa1bb32de497c597 Mon Sep 17 00:00:00 2001
Bug 933551 - Add SocialShare.uninit() to unload iframe r=felipe
Bug 924466 - Integrate acorn with the devtools; r=dcamp,robcee,gps