Refactor searching text attributes.

* Allow using ApplicationRecord#attribute_matches to search text attributes,
and standardize models on using this instead of duplicating code.

* Remove restrictions that limited wildcard searches to Builders only in various places.

app/models/user_feedback.rb

@@ -48,6 +48,8 @@ class UserFeedback < ApplicationRecord
     def search(params)
       q = super
 
+      q = q.attribute_matches(:body, params[:body_matches])
+
       if params[:user_id].present?
         q = q.for_user(params[:user_id].to_i)
       end