Append(i1):Insert(i2) Hidden(i1):Viewable(i2)
- foobar_i2 should be directly to the left of artist
- foobar_i1 should be on the far right
- both foobar_i1 and foobar_i2 should be in the column picker for this page
- only foobar_i2 should be in the column picker for the main library