Fixed #100. Changed drupalgap_prepare_argument_entities() to ask entity_load() for a reset if we're on an entity edit page. Changed entity_load() to accept options.reset which will force a reload on an entity, instead of attempting to load it from local storage. Changed drupalgap_entity_form_submit() to remove the entity from local storage before calling the entity update service resource. Changed all the code entity *_load() functions to accept options as a JSON object and then pass it along to entity_load(). Changed all of the core entity delete resource calls to remove the entity from local storage before calling the api.
Fixed merge conflict in common.inc.js