PASS pier created 
PASS list shows a delete form per pier 
PASS wrong name refused 
PASS empty name refused 
PASS refused while a batch runs 
PASS correct name: moved to trash 
PASS trash folder not listed as a pier 
PASS deleted pier page is 404 
PASS delete of a missing pier is 404 
PASS restore by moving the folder back 
PASS a pier cannot be named like the trash folder