Fix CDN log prefix when fixing attachments

Prettier

Resolve eslint errors

Fix forgotten function signature changes

Make IP/user-agent validation in CDN work

use prototype when signing message

sign urls in gateway

dont duplicate urls

include rest of attachment when signing

sign attachment on sending message

Sign media per user

Add ip?

More logging

log signed ip addr

Log signing errors

Add options to erquire IP or User Agent to access CDN

Set trusted proxies in CDN

Consistent request logging

Fix opcode 8

Fix typeorm queries no longer allowing empty where clauses

Update some dependencies, fix nix

Fix the fix ...

this should actually be what's intended

Check for old password when setting new ...

Checks for password

Fix the creation of guilds from templates ...

The biggest hold-up was missing fields (`premium_tier`,
`welcome_screen`, etc.) but it looks like someone has provided a
helpful function called `createGuild(...)` to provide sensible default
values.

This commit fixes the errors related to creating a guild from a
template. I've also refactored the code to include roles and channels in
the template.

To make sure that the @everyone role is cloned correctly, when
creating the guild from a template, we check if the role's ID
matches the template's `source_guild_id`. If it does, we set the
@everyone role to the new guild's ID.

Set `premium_tier` to 0 when creating guild from template ...

I think we'll need to discuss the proper way to provide default values
here. `premium_tier` for example should never be provided from the
template so it's fine going after the spread operator.

This commit still doesn't allow guilds to be created from template
because the next error is that `welcome_screen` doesn't exist. Our
options:

1. Provide default values in the ORM
2. Provide default values in the guild creation process
3. Throw an error if the template is missing values

Resolves: #1283 but creates a new issue

Await guild creation to fix a race condition ...

`Promise.all(...)` runs these simultaneously, yet role depends on the
guild to be created first. This can lead to a race condition. I've
awaited role creation too because the call to `Member.addToGuild(...)`
relies on the role to be created.

Fix PATCH Template route implementation ...

The previous PATCH implementation was creating a new template rather
than editing the existing template. This resulted in all requests
failing because it was missing more than one required field.

Resolves: #1281

Make ban reason nullable ...

Resolves: #1276

Add OP to message.mentions when replied to ...

The `message.message_reference` stores:

1. `message_id`
2. `channel_id`
3. `guild_id`

We use the `message_id` and `channel_id` to `.findOne(...)` Message, and
find the author. If the author is the same as OP, we skip (so replying
to yourself doesn't add you to the mentions array) otherwise, it adds
the author_id to the mentions array.

Resolves: #1247

Preserve reactions when a message is edited ...

Resolves #1241