no-jira: beautify the list of sub levels in the catalog if the number of...

no-jira: beautify the list of sub levels in the catalog if the number of levels is uneven and the view of type list

src/main/java/org/olat/repository/ui/catalog/_content/node.html

@@ -39,6 +39,12 @@
 						</div>
 					</div>
 				#end
+				#if($subCategories && $subCategories.size() % 2 == 1)
+					<div class="o_sublevel o_fill_sublevels">
+						<div class="o_visual"></div>
+						<div class="o_meta"><h4 class="o_title">&nbsp;</h4></div>
+					</div>
+				#end
 			</div>
 		#elseif($listStyle == "compact")
 			<ul class="o_sublevels_compact list-unstyled">

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

@@ -356,6 +356,14 @@
 				}	
 			}	
 		}
+		
+		.o_sublevel.o_fill_sublevels {
+			border: 1px solid transparent;
+			
+			.o_meta {
+				border-left: 1px solid transparent;
+			}
+		}
 	}	
 	
 	.o_sublevels {