add baseUrl for image previews in grid
add baseUrl for image previews in grid

kaufmo/koala-framework,nsams/koala-framework,nsams/koala-framework,yacon/koala-framework,Ben-Ho/koala-framework,koala-framework/koala-framework,Ben-Ho/koala-framework,yacon/koala-framework,kaufmo/koala-framework,Sogl/koala-framework,Sogl/koala-framework,yacon/koala-framework,kaufmo/koala-framework,nsams/koala-framework,koala-framework/koala-framework