fix pinned comments style

web/app/components/comment/_pinned/comment_pinned.scss

@@ -1,7 +0,0 @@
-.comment_pinned {
-  &, &.comment_view_admin {
-    .comment__username {
-      font-weight: 700;
-    }
-  }
-}

web/app/components/comment/index.js

@@ -31,7 +31,6 @@ require('./__vote/_type/_down/comment__vote_type_down.scss');
 require('./__vote/_type/_up/comment__vote_type_up.scss');
 
 require('./_level/comment_level.scss');
-require('./_pinned/comment_pinned.scss');
 require('./_replying/comment_replying.scss');
 require('./_useless/comment_useless.scss');
 

web/app/components/root/__pinned-comment/root__pinned-comment.scss

@@ -1,4 +1,6 @@
 .root__pinned-comment {
+  border-bottom-color: #bdd8d8;
+
   &:last-child {
     margin-bottom: 0;
     border-bottom: 0;

web/app/components/root/__pinned-comments/root__pinned-comments.scss

@@ -3,6 +3,6 @@
 .root__pinned-comments {
   margin-top: 24px;
   padding: ($offset / 3) ($offset / 2);
-  border: 2px solid #0aa;
   border-radius: 2px;
+  background: #d8efef;
 }