Sort list of posts per domain newest first

[Glorfindel83]

[feature-request]

Throughout metasmoke, all post lists are sorted in reverse chronological order, i.e. newest first.
The list of posts per domain, e.g. https://metasmoke.erwaysoftware.com/domains/2430 is an exception, it is sorted oldest first. For consistency, it's better to sort it newest first as well.

Reference: https://chat.stackexchange.com/transcript/message/40831773#40831773