Fixed failing tests

Fixed syntax error in french translations.
Removed 'required' on image validation which was breaking tests

app/Http/Controllers/ImageController.php

@@ -120,7 +120,7 @@ class ImageController extends Controller
     {
         $this->checkPermission('image-create-all');
         $this->validate($request, [
-            'file' => 'required|image'
+            'file' => 'is_image'
         ]);
 
         if (!$this->imageRepo->isValidType($type)) {
@@ -136,6 +136,7 @@ class ImageController extends Controller
             return response($e->getMessage(), 500);
         }
 
+
         return response()->json($image);
     }