Fixed some stuff

Here is the list of stuff that I changed:
DataSetModel.js - removed the hardcoded prefix of the URL
MessageModel.js - removed the hardcoded prefix of the URL
MsgDetailsModel.js -
                                Changed message.parent to message.get("parent")
                                Added a manual trigger to the change event, it is not triggered because only the internals of               the objects are updated and Backbone doesn't consider that as a "change"

MsgDetailsView.js - Added serializeData function to properly return the values as a regular JavaScript object and not a Backbone model

msgDetails.html - Fixed incorrect mapping of the title value in the serialized data