ui: update acm scoreboard display

packages/ui-default/pages/homework_scoreboard.page.styl

@@ -6,11 +6,11 @@
   .col--user
     width: rem(140px)
 
-  .col--total_score, .col--total_time_str, .col--solved_problems
+  .col--total_score
     width: rem(100px)
     text-align: center
 
-  .col--problem_detail
+  .col--problem, .col--record
     min-width: rem(100px)
     border-left: 1px solid $table-border-color
     text-align: center
@@ -19,5 +19,5 @@
     .col--user
       width: auto
 
-    .col--problem_detail
+    .col--problem, .col--record
       display: none