Update Gaia API documents for #2c8769352029af1fbe576c2d2bbec76e2f930370
    Bug 941176 - [Rocketbar] Add title to statusbar r=daleharvey

A new title resides in the statusbar. When rocketbar is enabled, notification icons are shifted to the right. The title attemtps to maintain proper state by listening to mozbrowser events.