Datastore cleanup (#1892)

* Start Store cleanup

* wip store cleanup

* fix iterables initiating datastores

* handle the possibility of a datastore with no holds and no its own 'create' method

* more cleanup (instances that need more than just client/data)

* missed RoleStore extras

* not sure how eslint didn't catch that tab...

* avoid re-getting the channel we already have...

* cleanup resolvers and refactor them into DataStores

* ^

* and remove

* fix some bugs

* fix lint

* fix documentation maybe?

* formatting

* fix presences

* really fix presences this time

* bad fix was bad... let;s see how bad this one is..

* forgot to save a file

* make presence resolving take userresolveables too

* fix tabs in jsdocs

* fix bad fix from last night that caused issues, with better fix...

* oops

src/structures/TextChannel.js

@@ -2,6 +2,7 @@ const GuildChannel = require('./GuildChannel');
 const Webhook = require('./Webhook');
 const TextBasedChannel = require('./interfaces/TextBasedChannel');
 const Collection = require('../util/Collection');
+const DataResolver = require('../util/DataResolver');
 const MessageStore = require('../stores/MessageStore');
 
 /**
@@ -63,7 +64,7 @@ class TextChannel extends GuildChannel {
    */
   async createWebhook(name, { avatar, reason } = {}) {
     if (typeof avatar === 'string' && !avatar.startsWith('data:')) {
-      avatar = await this.client.resolver.resolveImage(avatar);
+      avatar = await DataResolver.resolveImage(avatar, this.client.browser);
     }
     return this.client.api.channels[this.id].webhooks.post({ data: {
       name, avatar,