Moved blacklist / whitelist functions to owner cog
Moved [p]modset adminrole / modrole to [p]set command group
Check mod/admin users against blacklist / whitelist:
Users with (server or global) admin or mod role used to be able to skip the whitelist / blacklist checks. This doesn't really make sense from a design pov since these are global checks and the commands are owner only.
[p]set adminrole/modrole: check that the role actually exists before adding it
Added [p]blacklist/whitelist list, to show the members of each list
Fixes#668
The exception command sends the last occurred exception to the owner, or even publicly if requested.
The error that used to show up publicly when a command failed has been hidden for security reasons.
All references to "modules" have been changed to "cogs"
Implemented part of #561's changes
Handles non-git installations and non-default remotes
Links to branch
Chained commands for better peformances (theorically)
Startup flags: can be started and configured without ever doing the interactive setup
Changed default settings format so that all unset values are None
Removed new cogs prompt
Removed `LOGIN_TYPE` from settings.json. It now defaults to token and fallbacks to email/password
Smarter initial setup: only asks for the settings that are actually missing
For the first installation all default cogs are loaded
Startup flag that allows settings to be memory-only
Initial selfbot support
Only reset login credentials (on confirmation) instead of deleting the whole file in case of login failure
Revamped main screen
Made sure that nothing blows up when you run Red on Windows without `chcp 65001`
Possibility of setting credentials in the environment variables `RED_TOKEN` / `RED_EMAIL` `RED_PASSWORD`. They will take priority over the configuration stored on disk.
Added `[p]set serverprefix`
`Bot.command_prefix` is now a callable that returns the prefixes set for the server. If none are set, it returns the global ones.
