no-jira: fix missing thumbnails in catalog list and compact list

src/main/webapp/static/themes/light/modules/_coursesite.scss

@@ -256,7 +256,7 @@
 		border-bottom: 1px solid $o-coursesite-catalog-border;
 
 		.o_visual {
-			height: $o-coursesite-rowelem-width-md;	
+			height: $o-coursesite-rowelem-width-md;
 		}	
 
 		.o_meta {
@@ -325,6 +325,12 @@
 			.o_visual {
 				height: $o-coursesite-rowelem-width-xs;
 				width: $o-coursesite-rowelem-width-xs;
+				
+				span.o_visual_not_available {
+					width:100%;
+					height:100%;
+					display:block;
+				}
 			}
 			
 			.o_title {
@@ -386,6 +392,12 @@
 				border: 1px solid $o-coursesite-catalog-border;
 				position: relative;
 				height: $o-coursesite-rowelem-width-md;
+			
+				span.o_visual_not_available {
+					width:100%;
+					height:100%;
+					display:block;
+				}
 			}	
 			.o_meta {
 				position: absolute;