Remove feature_list.md as it is super outdated

docs/feature_list.md

@@ -1,63 +0,0 @@
-# Feature list
-
-This list specifies all features in Onion that ought to be tested before actually pushing live:
-
-- sign up & email activation
-- login
-- log out
-- form input
-    + reset
-    + save
-    + disabled state
-- form checkbox
-    + reset
-    + save
-    + disabled state
-- create app
-    + refresh token
-- loan contract
-    + upload
-    + download
-    + delete
-- register work
-    + with edition
-    + without edition
-    + correct encoding of video upload
-- fineuploader
-    + upload file
-    + upload multiple files
-    + delete file
-    + cancel upload of file
-- create editions
-    + in piece list
-    + in piece detail
-- all notes in edition/piece detail
-- transfer & consign & loan & share & delete
-    + bulk
-    + single
-    + withdraw
-- piece list
-    + filter (also check for correct filtering of opened edition tables)
-    + order
-    + search
-    + pagination
-    + expandable edition list for piece
-- download coa
-
-## sluice
-- hero landing page
-- activation email
-- submission (also check extra form fields)
-    + of existing pieces
-    + newly registered pieces
-- rating
-    + in piece list
-    + in piece detail
-- short listing (not yet implemented)
-- piece list
-    + order by rating
-
-## Cyland
-- hero landing page
-- activation email
-- submission (check states of submission (1,2,3))