Turn off threading on testserver

Now that SSE is a separate server, this isn't needed, and this makes testing easier
remove !wiki
remove !#d#
remove unused imports
Audit history (#19)
Merge remote-tracking branch 'andreasots/cleanup'
highlights: bot side
highlights: cron script
highlights: update requirements.txt
Change sub-only label
Remove !wiki
Merge remote-tracking branch 'andreasots/highlights'
Remove test code
Some tweaks and fixups
Add docstring for !highlight
Add "all" history option
chat_log stub
log: to database
Merge pull request #34 from andreasots/prism

Stage one of #21 (Archive with synched chat): logging
log: ?