Allow user to start work from DMs. (#267)

* merge upstream/main

* update permissions check for guild settings

* add error handler for the bot

* allow users to start work from DMs and broadcast task completion messages to all log channels

* remove print statement

discord-bot/.env.example

@@ -1,7 +1,7 @@
 BOT_TOKEN=<discord bot token>
 DECLARE_GLOBAL_COMMANDS=<testing guild id>
 OWNER_IDS=[<your user id>, <other user ids>]
-PREFIX="./"
+PREFIX="/"  # Don't change, this allows for slash commands in DMs
 
 OASST_API_URL="http://localhost:8080"  # No trailing '/'
 OASST_API_KEY=""