Tooltips on follow and vote.

lms/templates/discussion/_underscore_templates.html

@@ -20,9 +20,9 @@
 
 <script type="text/template" id="thread-show-template">
   <div class="discussion-post">
-      <div><a href="javascript:void(0)" class="dogear action-follow"></a></div>
+      <div><a href="javascript:void(0)" class="dogear action-follow" data-tooltip="follow"></a></div>
       <header>
-          <a href="#" class="vote-btn discussion-vote discussion-vote-up" data-role="discussion-vote"><span class="plus-icon">+</span> <span class='votes-count-number'>${'<%- votes["up_count"] %>'}</span></a>
+          <a href="#" class="vote-btn discussion-vote discussion-vote-up" data-role="discussion-vote" data-tooltip="vote"><span class="plus-icon">+</span> <span class='votes-count-number'>${'<%- votes["up_count"] %>'}</span></a>
           <h1>${'<%- title %>'}</h1>
           <p class="posted-details">
               ${"<% if (obj.username) { %>"}

lms/templates/discussion/mustache/_inline_thread_show.mustache

 <div class="discussion-post local">
-    <div><a href="javascript:void(0)" class="dogear action-follow"></a></div>
+    <div><a href="javascript:void(0)" class="dogear action-follow" data-tooltip="follow"></a></div>
     <header>
-        <a href="#" class="vote-btn discussion-vote discussion-vote-up" data-role="discussion-vote"><span class="plus-icon">+</span> <span class='votes-count-number'>{{votes.up_count}}</span></a>
+        <a href="#" class="vote-btn discussion-vote discussion-vote-up" data-role="discussion-vote" data-tooltip="vote"><span class="plus-icon">+</span> <span class='votes-count-number'>{{votes.up_count}}</span></a>
         <h3>{{title}}</h3>
         <p class="posted-details">
             {{#user}}