Added History controller and model.
Added history service.
Added remove method to history service.
Implemented history data write / delete to all necessary models.
Implemented generic object title dynamic attribute to all models. This is needed for object history data show.
Added helper JSON object for history objects.
Added objectDiff dependence, thanks to https://github.com/NV/objectDiff.js
Updated readme
Implemented object history data view for specified object.