Clean up user entity - remove unused fields, adjust order

config/models

@@ -1,22 +1,17 @@
 User
-    ident Text sqltype=varchar(255)
-    fullName Text sqltype=varchar(500)
-    email Text sqltype=varchar(255)
+    username Text maxlen=190
+    fullName Text maxlen=500
+    email Text maxlen=190
     note Text
-    password Text Maybe sqltype=varchar(255) default=NULL
-    UniqueUser ident
+    UniqueUsername username
+    UniqueEmail email
     deriving Typeable
-Comment json -- Adding "json" causes ToJSON and FromJSON instances to be derived.
-    message Text sqltype=varchar(255)
-    userId UserId Maybe default=NULL
-    deriving Eq
-    deriving Show
+
 Site
     icon Text sqltype=varchar(255)
     url Text sqltype=varchar(255)
+
 Profile
     userId UserId
     siteId SiteId
     username Text sqltype=varchar(255)
-
- -- By default this file is used in Model.hs (which is imported by Foundation.hs)