code cleanup

- use Object.assign instead of Object.keys().forEach
- loadSettings() no longer necessary
- double quoting no longer necessary

static/js/map.js

@@ -163,21 +163,13 @@ function downloadSettings(name, settings) { // eslint-disable-line no-unused-var
     document.body.removeChild(a)
 }
 
-function loadSettings(e) {
-    var t = JSON.parse(JSON.parse(e))
-    Object.keys(t).forEach(function (e) {
-        localStorage.setItem(e, t[e])
-    })
-    window.location.reload()
-}
-
-function openSettingsFile(file) { // eslint-disable-line no-unused-vars
-    var fr = new FileReader()
-    fr.onload = function () {
-        console.log(fr.result)
-        loadSettings(fr.result)
+function loadSettingsFile(file) { // eslint-disable-line no-unused-vars
+    var reader = new FileReader()
+    reader.onload = function () {
+        Object.assign(localStorage, JSON.parse(reader.result))
     }
-    fr.readAsText(file.target.files[0])
+    reader.readAsText(file.target.files[0])
+    window.location.reload()
 }
 
 function initMap() { // eslint-disable-line no-unused-vars

templates/map.html

@@ -461,8 +461,8 @@ <h3>Location Icon Marker</h3>
           </div>
         </div>
       <div>
-        <center><button class="settings" onclick="downloadSettings('RocketMap', JSON.stringify(JSON.stringify(localStorage)))"><i class="fa fa-upload fa-fw"></i>Export Settings</button></center>
-        <center><input id="fileInput" type="file" style="display:none;" onchange="openSettingsFile(event)"> <button class="settings" onclick="document.getElementById('fileInput').click()"><i class="fa fa-download fa-fw"></i>Import Settings</button></center>
+        <center><button class="settings" onclick="downloadSettings('RocketMap', JSON.stringify(localStorage))"><i class="fa fa-upload fa-fw"></i>Export Settings</button></center>
+        <center><input id="settingsFileInput" type="file" style="display:none;" onchange="loadSettingsFile(event)"> <button class="settings" onclick="document.getElementById('settingsFileInput').click()"><i class="fa fa-download fa-fw"></i>Import Settings</button></center>
         <center><button class="settings" onclick="confirm('Are you sure you want to reset settings to default values?') ? (localStorage.clear(), window.location.reload()) : false"><i class="fa fa-refresh fa-fw"></i>Reset Settings</button></center>
       </div>
       </nav>