Backed out changesets 3ab31cfb6837 (bug 1024965), 5cebb1e06e25 (bug 1029654), acd333921065 (bug 1024073). r=backout
Bug 1024073 - Whitelist plugin: Roblox Plugin launcher. r=gfritzsche
Bug 1029654 - Whitelist plugin: Box Edit. r=gfritzsche
Bug 1024965 - Whitelist plugin: Nexus Personal. r=gfritzsche