Const, service, and model updates

- Updated enum values to be uppercase
- Updated services to expose service models
- Updated models to only export the mongoose model
- Moved all mongoose static methods over to new services
- Updated tests to refelct new setup

BREAKING

- Status that were uppercased (caps) have caused issues with the
  admin pages

models/setting.js

@@ -1,6 +1,5 @@
 const mongoose = require('../services/mongoose');
 const Schema = mongoose.Schema;
-const _ = require('lodash');
 
 const WordlistSchema = new Schema({
   banned: [String],
@@ -64,12 +63,6 @@ const SettingSchema = new Schema({
   }
 });
 
-/**
- * toJSON provides settings overrides to this object's serialization methods.
- */
-SettingSchema.options.toJSON = {};
-SettingSchema.options.toJSON.virtuals = true;
-
 /**
  * Merges two settings objects.
  */
@@ -88,72 +81,9 @@ SettingSchema.method('merge', function(src) {
   });
 });
 
-/**
- * Filters the object for the given user only allowing those with the allowed
- * roles/permissions to access particular parameters.
- */
-SettingSchema.method('filterForUser', function(user = false) {
-  if (!user || !user.roles.includes('admin')) {
-    return _.pick(this.toJSON(), [
-      'moderation',
-      'infoBoxEnable',
-      'infoBoxContent',
-      'closeTimeout',
-      'closedMessage',
-      'charCountEnable',
-      'charCount',
-      'requireEmailConfirmation'
-    ]);
-  }
-
-  return this.toJSON();
-});
-
 /**
  * The Mongo Mongoose object.
  */
 const Setting = mongoose.model('Setting', SettingSchema);
 
-/**
- * The Setting Service object exposing the Setting model.
- * @type {Object}
- */
-const SettingService = module.exports = {};
-
-/**
- * The selector used to uniquely identify the settings document.
- */
-const selector = {id: '1'};
-
-/**
- * Gets the entire settings record and sends it back
- * @return {Promise} settings the whole settings record
- */
-SettingService.retrieve = () => Setting.findOne(selector);
-
-/**
- * This will update the settings object with whatever you pass in
- * @param  {object} setting a hash of whatever settings you want to update
- * @return {Promise} settings Promise that resolves to the entire (updated) settings object.
- */
-SettingService.update = (settings) => Setting.findOneAndUpdate(selector, {
-  $set: settings
-}, {
-  upsert: true,
-  new: true,
-  setDefaultsOnInsert: true
-});
-
-/**
- * This is run once when the app starts to ensure settings are populated.
- * @return {Promise} null initialize the global settings object
- */
-SettingService.init = (defaults) => {
-
-  // Inject the defaults on top of the passed in defaults to ensure that the new
-  // settings conform to the required selector.
-  defaults = Object.assign({}, defaults, selector);
-
-  // Actually update the settings collection.
-  return SettingService.update(defaults);
-};
+module.exports = Setting;