Two Documents and media portlets in the same page share the configuration.
Steps to reproduce:
1. Login as admin user
2. Go to a site page and add two Documents and Media portlets to the same page
3. Please add some documents for Documents and Media portlets to render
4. Update sorting order from one of two Documents and Media portlets
Expected Behavior: Sorting order for only 1 portlet is changed
Actual Behavior: Sorting order for both portlets are changed