WIP Bug 959694 Combine statusbar and Rocketbar.

OK I haven't finished but I need to grab some sleep so sending a pull request in case someone wants to carry on while I sleep. Either way I will continue tomorrow. I'm sorry I've created a lot of regressions, I've fixed as many as I can and listed the others I know about below.

Known issues:
1. I broke all the tests. Ugh.
2. Need to set placeholder text on homescreen.
3. Need to look through all handlers that hide the utility tray to see if we need to hide the Rocketbar for the same events.
4. The task manager should remain visible when focus on Rocketbar before results appear?
5. Need to update the title bar when an app gets killed.
6. Need to focus Rocketbar when launched from search.
7. Need to launch Rocketbar from search!
8. Test with emergency alert and simpinshow events to look for regressions
9. Need to go back to task manager when cancelling from focused state of Rocketbar
10. Sometimes a web address appears instead of a title.
11. Sometimes the app title appears instead of the page title for browser windows.
12. Cancel button touch target sucks and need an image asset.
13. Other stuff...