change can moderate method to can edit

app/models/user.rb

@@ -99,22 +99,29 @@ class User < ApplicationRecord
     false
   end
 
-  def is_curator?
+  def is_moderator?
     roles.each do |role|
-      return true if role.name == 'curator'
+      return true if role.name == 'moderator'
     end
     false
   end
 
-  def is_moderator?
+  def is_supervisor?
     roles.each do |role|
-      return true if role.name == 'moderator'
+      return true if role.name == 'supervisor'
+    end
+    false
+  end
+
+  def is_editor?
+    roles.each do |role|
+      return true if role.name == 'editor'
     end
     false
   end
 
-  def can_moderate?
-    self.is_admin? || self.is_moderator?
+  def can_edit?
+    self.is_admin? || self.is_editor?
   end
 
   def associated_collections