Moved all error strings to src/errors/messages and a few other things (#1695)

* Added missing error messages
As well as `Guild#setRolePosition` and `Guild#setChannelPosition`'s first arg validation
And fixed a typo in `Guild#setChannelPosition`
`roles` -> `channels`

* Reverted collection and Util constructors

* Removed leftover messages
Should have been in the second commit.

* It's a single invalid permission and removed unused flag error

* Fix INVALID_TOKEN -> TOKEN_INVALID as of #1703

src/structures/GuildChannel.js

@@ -4,6 +4,7 @@ const Invite = require('./Invite');
 const PermissionOverwrites = require('./PermissionOverwrites');
 const Permissions = require('../util/Permissions');
 const Collection = require('../util/Collection');
+const { TypeError } = require('../errors');
 
 /**
  * Represents a guild channel (i.e. text channels and voice channels).
@@ -163,7 +164,7 @@ class GuildChannel extends Channel {
     } else {
       userOrRole = this.client.resolver.resolveUser(userOrRole);
       payload.type = 'member';
-      if (!userOrRole) return Promise.reject(new TypeError('Supplied parameter was neither a User nor a Role.'));
+      if (!userOrRole) return Promise.reject(new TypeError('INVALID_TYPE', 'parameter', 'User nor a Role', true));
     }
 
     payload.id = userOrRole.id;