Limit Name field in all objects to 255 characters

When integrating to Rally, integrations fail due to Rally's 255 character limit in the matching field. There are no error messages or notifications. This was determined through some back end research. In order to prevent this in the future, we want to limit the Name field for all objects (Initiatives, Epics, Features, Idea)s to 255 characters, which is more than enough for a title.