Update Bootstrap to v4.1, fix chosen.js and pagedown on multiple sites

app/models/error_template.rb

@@ -3,6 +3,6 @@ class ErrorTemplate < ApplicationRecord
   has_and_belongs_to_many :error_template_attributes
 
   def to_s
-    "#{id} [#{name}]"
+    name
   end
 end

app/models/error_template_attribute.rb

@@ -2,6 +2,6 @@ class ErrorTemplateAttribute < ApplicationRecord
   has_and_belongs_to_many :error_template
 
   def to_s
-    "#{id} [#{key}]"
+    key
   end
 end