Linter: Fix all lint errors

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

lib/response.js

@@ -1,28 +1,28 @@
 'use strict'
 // response
 // external modules
-var fs = require('fs')
-var path = require('path')
-var request = require('request')
+const fs = require('fs')
+const path = require('path')
+const request = require('request')
 // core
-var config = require('./config')
-var logger = require('./logger')
-var models = require('./models')
+const config = require('./config')
+const logger = require('./logger')
+const models = require('./models')
 const noteUtil = require('./web/note/util')
 const errors = require('./errors')
 
 // public
-var response = {
+const response = {
   showIndex: showIndex,
   githubActions: githubActions,
   gitlabActions: gitlabActions
 }
 
 function showIndex (req, res, next) {
-  var authStatus = req.isAuthenticated()
-  var deleteToken = ''
+  const authStatus = req.isAuthenticated()
+  const deleteToken = ''
 
-  var data = {
+  const data = {
     signin: authStatus,
     infoMessage: req.flash('info'),
     errorMessage: req.flash('error'),
@@ -49,9 +49,9 @@ function showIndex (req, res, next) {
 }
 
 function githubActions (req, res, next) {
-  var noteId = req.params.noteId
+  const noteId = req.params.noteId
   noteUtil.findNote(req, res, function (note) {
-    var action = req.params.action
+    const action = req.params.action
     switch (action) {
       case 'gist':
         githubActionGist(req, res, note)
@@ -64,41 +64,41 @@ function githubActions (req, res, next) {
 }
 
 function githubActionGist (req, res, note) {
-  var code = req.query.code
-  var state = req.query.state
+  const code = req.query.code
+  const state = req.query.state
   if (!code || !state) {
     return errors.errorForbidden(res)
   } else {
-    var data = {
+    const data = {
       client_id: config.github.clientID,
       client_secret: config.github.clientSecret,
       code: code,
       state: state
     }
-    var authUrl = 'https://github.com/login/oauth/access_token'
+    const authUrl = 'https://github.com/login/oauth/access_token'
     request({
       url: authUrl,
       method: 'POST',
       json: data
     }, function (error, httpResponse, body) {
       if (!error && httpResponse.statusCode === 200) {
-        var accessToken = body.access_token
+        const accessToken = body.access_token
         if (accessToken) {
-          var content = note.content
-          var title = models.Note.decodeTitle(note.title)
-          var filename = title.replace('/', ' ') + '.md'
-          var gist = {
-            'files': {}
+          const content = note.content
+          const title = models.Note.decodeTitle(note.title)
+          const filename = title.replace('/', ' ') + '.md'
+          const gist = {
+            files: {}
           }
           gist.files[filename] = {
-            'content': content
+            content: content
           }
-          var gistUrl = 'https://api.github.com/gists'
+          const gistUrl = 'https://api.github.com/gists'
           request({
             url: gistUrl,
             headers: {
               'User-Agent': 'HedgeDoc',
-              'Authorization': 'token ' + accessToken
+              Authorization: 'token ' + accessToken
             },
             method: 'POST',
             json: gist
@@ -121,9 +121,9 @@ function githubActionGist (req, res, note) {
 }
 
 function gitlabActions (req, res, next) {
-  var noteId = req.params.noteId
+  const noteId = req.params.noteId
   noteUtil.findNote(req, res, function (note) {
-    var action = req.params.action
+    const action = req.params.action
     switch (action) {
       case 'projects':
         gitlabActionProjects(req, res, note)
@@ -143,7 +143,7 @@ function gitlabActionProjects (req, res, note) {
       }
     }).then(function (user) {
       if (!user) { return errors.errorNotFound(res) }
-      var ret = { baseURL: config.gitlab.baseURL, version: config.gitlab.version }
+      const ret = { baseURL: config.gitlab.baseURL, version: config.gitlab.version }
       ret.accesstoken = user.accessToken
       ret.profileid = user.profileid
       request(