Fixes #232.
Merge pull request #234 from AshFurrow/mixup

@orta => Fixes #232.
turn off bid buttons when offline
Merge branch 'master' of https://github.com/artsy/eidolon into location
Merge pull request #239 from orta/location

@ashfurrow => Use Reachabilty to disable bid / registration buttons
display messages in response to various possible states
clean up