Bug 992995 - Implement the plugin whitelist for the following plugins/bugs. r=gfritzsche
* bug 979849 - Unity
* bug 980133 - Cisco Jabber SDK
* bug 980772 - McAfee Security Scanner
* bug 981403 - Cisco VGConnect for directv.com
* bug 981905 - Cisco Jabber Guest
* bug 982045 - Estonian ID card
* bug 984441 - coupons.com
* bug 987056 - Nexus Personal BankID
* bug 988119 - gradecam
* bug 988781 - Smart Card Plugin
* bug 989096 - Cisco WebEx
* bug 990067 - Skype
* bug 990068 - Facebook video calling
* bug 990069 - MS Office Lync plugin
* bug 990286 - VidyoWeb plugin