add court mandates to Edit CASA Case page

[Zrrrpy]

Part of epic #1730

AS a supervisor,
I WANT to add court mandates to a case,
SO THAT they show up in volunteer generated court reports,
AND for historical context.

How it works now

It doesn't! This is a brand new feature.

How it should work instead

Supervisors should be able to add court mandates to a case (in the "Court Details" section).

Acceptance Criteria

• Only supervisors have the ability to add/edit/remove court mandates.
• This lives at the bottom of the "Court Details" section on the Edit CASA Case page.
• There should be a subheader within this section with the text: Court Mandates
  If you have a different design vision for what follows, go for it! We are not married to what's described below.
• Underneath "Court Mandates", should be the text "Add a court mandate."
• There should be a clickable + symbol next to this text which creates a text field when clicked.
• The user's cursor should automatically be in the new text field once it is created.
• A "submit" button should appear alongside the new text field.
• Clicking "submit" saves the court mandate as typed in the text field.
• There is no limit on how many court mandates can be added.
• Clicking "Update CASA Case" (already exists on the page) saves changes.

[rhian-cs]

Hello, I am working on this issue.

[compwron]

very cool! :) :)