fixing issue with thumbnails in webdav version
fixing issue with thumbnails in webdav version

tagspaces/tagspaces,cbop-dev/tagspaces,cbop-dev/tagspaces,tagspaces/tagspaces,tagspaces/tagspaces,tagspaces/tagspaces,tagspaces/tagspaces,cbop-dev/tagspaces,tagspaces/tagspaces,tagspaces/tagspaces,tagspaces/tagspaces