Linter: Fix all lint errors

Signed-off-by: Philip Molares <philip.molares@udo.edu>

lib/models/index.js

@@ -1,20 +1,22 @@
 'use strict'
 // external modules
-var fs = require('fs')
-var path = require('path')
-var Sequelize = require('sequelize')
+const fs = require('fs')
+const path = require('path')
+const Sequelize = require('sequelize')
 const { cloneDeep } = require('lodash')
 
 // core
-var config = require('../config')
-var logger = require('../logger')
+const config = require('../config')
+const logger = require('../logger')
 
-var dbconfig = cloneDeep(config.db)
-dbconfig.logging = config.debug ? (data) => {
-  logger.info(data)
-} : false
+const dbconfig = cloneDeep(config.db)
+dbconfig.logging = config.debug
+  ? (data) => {
+      logger.info(data)
+    }
+  : false
 
-var sequelize = null
+let sequelize = null
 
 // Heroku specific
 if (config.dbURL) {
@@ -38,14 +40,14 @@ function processData (data, _default, process) {
 }
 sequelize.processData = processData
 
-var db = {}
+const db = {}
 
 fs.readdirSync(__dirname)
   .filter(function (file) {
     return (file.indexOf('.') !== 0) && (file !== 'index.js')
   })
   .forEach(function (file) {
-    var model = sequelize.import(path.join(__dirname, file))
+    const model = sequelize.import(path.join(__dirname, file))
     db[model.name] = model
   })