Localised draft save time display

In reference to #83.

@@ -4,6 +4,7 @@ use Activity;
 use BookStack\Exceptions\NotFoundException;
 use BookStack\Repos\UserRepo;
 use BookStack\Services\ExportService;
+use Carbon\Carbon;
 use Illuminate\Http\Request;
 use BookStack\Http\Requests;
 use BookStack\Repos\BookRepo;
@@ -214,8 +215,14 @@ class PageController extends Controller
         } else {
             $draft = $this->pageRepo->saveUpdateDraft($page, $request->only(['name', 'html', 'markdown']));
         }
-        $updateTime = $draft->updated_at->format('H:i');
-        return response()->json(['status' => 'success', 'message' => 'Draft saved at ' . $updateTime]);
+
+        $updateTime = $draft->updated_at->timestamp;
+        $utcUpdateTimestamp = $updateTime + Carbon::createFromTimestamp(0)->offset;
+        return response()->json([
+            'status' => 'success',
+            'message' => 'Draft saved at ',
+            'timestamp' => $utcUpdateTimestamp
+        ]);
     }
 
     /**

@@ -13,6 +13,7 @@
     "dropzone": "^4.0.1",
     "laravel-elixir": "^3.4.0",
     "marked": "^0.3.5",
+    "moment": "^2.12.0",
     "zeroclipboard": "^2.2.0"
   }
 }

 "use strict";
 
+var moment = require('moment');
+
 module.exports = function (ngApp, events) {
 
     ngApp.controller('ImageManagerController', ['$scope', '$attrs', '$http', '$timeout', 'imageManagerService',
@@ -367,7 +369,8 @@ module.exports = function (ngApp, events) {
             if (isMarkdown) data.markdown = $scope.editContent;
 
             $http.put('/ajax/page/' + pageId + '/save-draft', data).then((responseData) => {
-                $scope.draftText = responseData.data.message;
+                var updateTime = moment.utc(moment.unix(responseData.data.timestamp)).toDate();
+                $scope.draftText = responseData.data.message + moment(updateTime).format('H:m');
                 if (!$scope.isNewPageDraft) $scope.isUpdateDraft = true;
             });
         }