Askrover post staging tweaks

A collection of small tweaks and cleanups I've been working on since Ask Rover was deployed to staging.

* Disabled Askbot footer.
* Added Ask Rover FAQ link to Askbot header, changed name of "help" to "Ask Rover help."
* Changed head title from Askbot to Ask Rover, and separator to a bar " | " for consistency with other Rover sites.
* Capitalized some head titles for consistency.
* Got Ask Rover displaying the Rover favicon.
* Removed a duplicated livesetting.