Upgrade umbraco to 7.5.4

WebCms/Umbraco/Views/propertyeditors/listview/layouts/grid/grid.html

@@ -39,7 +39,8 @@
    on-drag-enter="vm.dragEnter()">
 
       <umb-file-dropzone
-         ng-if="!vm.isRecycleBin"
+         ng-if="!vm.isRecycleBin && vm.acceptedMediatypes.length > 0"
+         accepted-mediatypes="vm.acceptedMediatypes"
          parent-id="{{vm.nodeId}}"
          files-uploaded="vm.onUploadComplete"
          accept="{{vm.acceptedFileTypes}}"

WebCms/Umbraco/Views/propertyeditors/listview/layouts/list/list.html

@@ -9,7 +9,8 @@
         on-drag-enter="vm.dragEnter()">
 
         <umb-file-dropzone
-           ng-if="!vm.isRecycleBin"
+           ng-if="!vm.isRecycleBin && vm.acceptedMediatypes.length > 0"
+           accepted-mediatypes="vm.acceptedMediatypes"
            parent-id="{{vm.nodeId}}"
            files-uploaded="vm.onUploadComplete"
            accept="{{vm.acceptedFileTypes}}"