Updated extension admin org filter to display all first

Overview

To fix bug on extension admin table so that org filter displays All first and doesn't assign it to the first alphabetized org name.

-Created function in extension admin view so that the view doesn't sort All as it iterates through and sorts organization names

Removed empty drop down choice in org filter for both exceptions and extensions. No longer needed.

Go to http://localhost:8000/administration/list-extensions/
Make sure that All is first on the list. Can test with stache production creds to see that All is no longer alphabetized.
Go to http://localhost:8000/administration/list-exceptions/
Make sure that All is first on the list and not a blank row.

No longer starts with blank row