Show author of press releases

[xaur]

Press releases would feel more "human-made" if they had author specified.

[jholdstock]

This issue remains open because #1015 added authors for "Coverage" but not for "Press Releases".

Quoting my comment from that pull request:

Adding authors for Press Releases will be a bit more tricky because those are mostly unattributed at the moment. I believe the most recent ones were written by Lindsey McConaghy, and before that they would probably be from various members of the Ditto team. I don't recall who did the ones prior to Ditto.

It will take some digging to go back through the years and find the relevant info, probably not a job for this pull request IMO.