Remove "registry object" number from the object library dropdown

[hazelshapiro]

From Sandy:

I don't think we need the "Registry Object" number to be in front of the names on the drop down. Small thing, just distracting.

Hazel's note: I could see that this could be helpful as an admin for managing the object library. What do you think? We could remove it for respondents and leave it for admins, but that might over complicate things.

Related to #218 which also deals with how this table looks and works.

[mfisher87]

I think the numbers can be helpful for clearly communicating what "page" we're on, but I don't think we need to necessarily display them everywhere! Removing them from the dropdown makes sense, but have we spoken to any Respondents about that yet? I think it'd be useful to double-check nobody relies on that before removing or hiding info.

[hazelshapiro]

Noted - sounds good