Make accept MR widget looks similar to panels

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/assets/stylesheets/sections/merge_requests.scss

@@ -111,7 +111,8 @@
   .ci_widget {
     padding: 10px 15px;
     font-size: 15px;
-    border-bottom: 1px dashed #AAA;
+    border-bottom: 1px solid #BBB;
+    color: #777;
 
     &.ci-success {
       color: $bg_success;
@@ -143,7 +144,8 @@
     padding: 10px 15px;
 
     h4 {
-      margin-top: 0px;
+      font-size: 20px;
+      font-weight: normal;
     }
 
     p:last-child {