[Task]: Sort by Posted Date desc by default

[rylew1]

Summary

More useful to users to sort by Posted Date desc be default

Acceptance criteria

• Default API call to Posted Date desc
• Posted Date desc comes by default first in the list
• Posted Date asc is 2nd (move them both up)

[rylew1]

@andycochran can you verify this ticket is correct?

[andycochran]

LGTM (just added a note about moving the ascending version up too so they stay together)