Set up basic chatter body

[saraht45]

The goal is to have a basic chatter body with the following features:

• A single chatter parent that can support all gender identities.
• Basic default description ("Sarah is a person.")
• Ability to flesh out chatter description using the @traits command. @trait options that are not overwhelming but robust enough that users feel they can fully represent themselves in the environment.
• Minimal body part details.
• Remove need for clothing objects so characters do not appear nude. Let clothing be a property that can be set via @traits.

[saraht45]

Status Update

• Removed UrMale and UrFemale bodies from start story. Replaced with generic UrMainbody.
• Relocated facialhair from UrMale to UrMainbody. It is hidden by default unless chatter adds facial hair via @traits.
• Unchecked “Clothes Expected” trait in UrMainbody so chatters will not appear naked.
• Added “trait:appearance:dress” to chatters so users can define how they are dressed via @traits. 
• Added casually dressed and professionally dressed to the list of @traits options for dress.
• Cut down the number of @trait options for the various body parts to make it less overwhelming.
• Cleaned up the chatter descriptions, focusing on hair and facial hair outputs.
• Added basic hair and facial hair styles.