Don't use the scale to determine the depth in Faceplus.  Apparently it's not
reliable.
Update attachment data on attachment delete.
Better attachment styling.
Force the scroll bar.
Scratch that; I just didn't understand how magic invisible disappearing scroll
bars worked on OS X.
Fix for attachments' not appearing in rear view mirror head mode.
Un-default the "OK" button so that we can press enter on the URL field.
Attachment translations in world space.
Only add each texture once.
Merge pull request #2797 from ey6es/master

Disabled depth determination based on scale for Faceplus, improved attachment edit UI, fix for attachments' not appearing in rear view mirror head mode.