Add Devilfish information to our meta sections

[sylae]

#welcome, the main wiki page, subreddit info, etc etc, will all need to be reconfigured around to talk about Devilfish instead of Ashton

(apparently they never talked about ashton, but they should probably talk about devilfish... not very welcoming to news)

[baka2k10]

Changed priority to C; No mention of Ashton in the subreddit's info, nor in #welcome. Once we have Devilfish info up, we can put a section on the wiki for "Former Canon" or somethin

[sylae]

Yeet. leaving the issue as-is (with the description changed) because we really should have this stuff laid out for new players