Admin: By default sort users by last date joined with the most recent users showing up on top

[mariobehling]

In https://eventyay.com/admin/users please

• sort according to the most recent user on the top (member since).
• show 50 users per page by default

Compare: https://eventyay.com/admin/users/all?sort_by=created-at&sort_dir=ASC

[pavnesh-c]

i would like to work on this issue

[maze-runnar]

#5653 (comment)

#5653 (comment)