introduce djhtml as jinja+scss formater

core/static/core/navbar.scss

@@ -43,7 +43,7 @@ nav.navbar {
       justify-content: center;
       display: flex !important;
     }
-    
+
     > .menu,
     > .link {
       box-sizing: border-box;
@@ -146,5 +146,5 @@ nav.navbar {
         }
       }
     }
-  }  
+  }
 }