Allign md header components

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

app/assets/stylesheets/framework/markdown_area.scss

@@ -65,13 +65,6 @@
   position: relative;
 }
 
-.md-header {
-  ul {
-    float: left;
-    margin-bottom: 1px;
-  }
-}
-
 .referenced-users {
   color: #4c4e54;
   padding-top: 10px;

app/assets/stylesheets/framework/zen.scss

@@ -4,7 +4,7 @@
     position: absolute;
     top: 0px;
     right: 4px;
-    line-height: 40px;
+    line-height: 56px;
   }
 
   a.js-zen-leave {