rocon interactions overhaul
refactor interactions naming and remove hardcoded roles and apps now we have functions to do so.
breaking out rocon_interaction_msgs (part i).
bugfix build errors in new interactions messages.
interactions finalised in rocon_interaction_msgs.
merged service parameter updates.
moved ConcertInfo -> MasterInfo
Merge pull request #76 from robotics-in-concert/indigo

Interactions overhaul