Fix broken spinner in apps menu
Fix broken spinner in apps menu

* fixes owncloud/core#19673

interfasys/galleryplus,IATkachenko/gallery,IATkachenko/gallery,IATkachenko/gallery,owncloud/gallery,tahaalibra/gallery,desaintmartin/gallery,setnes/galleryplus,viraj96/gallery,setnes/gallery,imjalpreet/gallery,owncloud/galleryplus,interfasys/galleryplus,desaintmartin/gallery,viraj96/gallery,viraj96/gallery,owncloud/gallery,desaintmartin/gallery,owncloud/galleryplus,setnes/galleryplus,setnes/galleryplus,tahaalibra/gallery,owncloud/gallery,owncloud/galleryplus,imjalpreet/gallery,tahaalibra/gallery,imjalpreet/gallery,interfasys/galleryplus,setnes/gallery,setnes/gallery