Multi-Select Filter Integration

[elipe17]

Description:
Using the tech memo produced in #3154 as a guide, align TDPs custom filtering needs with Django 508s query string building mechanism. The code provided in the tech memo is not meant to be the solution but a starting point to accomplish integrating the two applications better.

Acceptance Criteria:

• TDP can have multiple multi-select filters per page
• All filters are controlled by the Apply Filters button.
• Code is generalized for future property based custom filtering
• Testing Checklist has been run and all tests pass
• README is updated, if necessary

Tasks:
Create a list of granular, specific work items that must be completed to deliver the desired outcomes of this issue

• Update Django 508's dropdown-filter.js to support multi-select filters
• Add class for field base multi-select filtering to backend
• Remove existing usages of the multi-select filter
• Replace multi-select filter template with the provided template in Spike: Multi-Select Filter Integration #3154
• Look at the testing section from Spike: Multi-Select Filter Integration #3154 and implement
• Run Testing Checklist and confirm all tests pass

Notes:
Add additional useful information, such as related issues and functionality that isn't covered by this specific issue, and other considerations that will be helpful for anyone reading this

• Note 1
• Note 2
• Note 3

Supporting Documentation:
Please include any relevant log snippets/files/screen shots

• Doc 1
• Doc 2

Open Questions:
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• Open Question 1
• Open Question 2