Server calls are not done through $http

[mcwebb]

Parse uses it's own methods to send XHR, this patch should somehow link in to either replace the send method with a $http based one, or provide events.
At the moment $http interceptors don't work for Parse requests.

[mcwebb]

Version 1.2.0 provides parse:transfer:start and parse:transfer:end events to get around this problem. Though I'm sure how effective they are, and using $http would definitely be a better solution, but not on my todo list at the moment.