Only send the id of the other user when initiating a call as that is all that is required
Improve documentation for call_offer and call_accepted
Rename 'other' and 'otherUser' to 'peer' to describe better and consistently the intention
Remove unnecessary debug line
Merge pull request #144 from Standard8/tidy_call_messages

Only send the id of the other user when initiating a call as that is all that is required