editItemSave(id, title) {
		if (title.length) {
			this.store.update({id, title}, () => {
				this.view.editItemDone(id, title);
			});
		} else {
			this.removeItem(id);
		}
	}
Save an Item in edit.

@param {number} id ID of the Item in edit
@param {!string} title New title for the Item in edit