updated petition snippets to be ordered newest to oldest

[danielfmiranda]

Closes #7615

Link to sample test page: https://foundation-s-7615-petit-w9nftu.herokuapp.com/cms/snippets/wagtailpages/petition/?locale=en

Steps to test:

1. Please visit the testing link above, and log in to the CMS.
2. Create a new snippet with whatever name you like
3. Once saved, the new snippet should now appear at the top of the page vs at the end of the list.
4. If everything is working as expected, testing is complete!

Checklist

Changes in Models:

• Are my changes backward-compatible. If not, did I schedule a deploy with the rest of the team?

[danielfmiranda]

Since snippets do not seem to have a "created" or "created_date" column, I am ordering them by their unique ID's which are assigned upon creation. That way we can order them by newest to oldest

[Pomax]

that's basically the only option for snippets, so: approved =P

[kristinashu]

So I see how the newest snippets appear at the top of the snippet creation list. This is great and super helpful.

To be honest tho, the intention of this ticket was to make it appear at the top of the CTA picker.

For example:

• Go to create a new campaign page
• Click to "Choose CTA"

• Then a list is shown
• Currently it shows oldest to newest but it would be better if it were newest to oldest.

Screen cap of current picker within a page to show that the newer snippets appear last:

I'll approve this PR since it is still a nice improvement but perhaps we should open a follow up ticket for the in page picker?

[danielfmiranda]

Hi @kristinashu! wanted to give you a heads up that I updated this PR to now order the snippets under the campaign chooser panel as requested. Below is a screenshot of what appears now, thanks!

[kristinashu]

Perfect, thank you!