Apply ROBOTS_FOOTER to all whitelisted bots
Apply ROBOTS_FOOTER to all whitelisted bots

 - Ensure that ROBOTS_FOOTER immediately follows group of whitelisted user agents.
The footer must follow immediately in order to apply to that group
- Combine CCbot with other whitelisted bots in order to make FOOTER apply to CCBot
- Move comments that don't apply to specific user-agents outside of ROBOTS_HEADER

MushroomObserver/mushroom-observer,JoeCohen/mushroom-observer,MushroomObserver/mushroom-observer,JoeCohen/mushroom-observer,JoeCohen/mushroom-observer,MushroomObserver/mushroom-observer,MushroomObserver/mushroom-observer,JoeCohen/mushroom-observer,MushroomObserver/mushroom-observer,JoeCohen/mushroom-observer,MushroomObserver/mushroom-observer,JoeCohen/mushroom-observer,JoeCohen/mushroom-observer,MushroomObserver/mushroom-observer