improved emoji picker style

app/assets/stylesheets/pages/awards.scss

@@ -90,13 +90,15 @@
         height: 300px;
         overflow-y: scroll;
 
-        h4 {
+        h5 {
           clear: left;
         }
 
         ul {
           list-style-type: none;
           margin-left: -20px;
+          margin-bottom: 20px;
+          overflow: auto;
         }
 
         li {

app/views/votes/_votes_block.html.haml

@@ -12,7 +12,7 @@
       .emoji-menu
         .emoji-menu-content
           - AwardEmoji.emoji_by_category.each do |category, emojis|
-            %h4= AwardEmoji::CATEGORIES[category]
+            %h5= AwardEmoji::CATEGORIES[category]
             %ul
               - emojis.each do |emoji|
                 %li