[profiler] give divs a title tag

this provides a hover tag for when it is too small for the link to read

Author: moritz

src/vm/moar/profiler/template.html

@@ -279,7 +279,7 @@ <h3>Dynamic Optimization</h3>
 
     <script type="text/ng-template" id="icycle_graph_callee_renderer.html">
         <a href="#" class="call" style="background-color: {{backgroundColor()}};" ng-click="toCallee(callee.Node)">{{callee.name}}</a>
-        <div class="child" style="width: {{callee.inclusive_time * 100 / total_time}}%;" ng-repeat="callee in callee.callees" ng-include="'icycle_graph_callee_renderer.html'"></div>
+        <div class="child" style="width: {{callee.inclusive_time * 100 / total_time}}%;" ng-repeat="callee in callee.callees" title="{{callee.name}}" ng-include="'icycle_graph_callee_renderer.html'"></div>
     </script>
 
     <div class="container" ng-show="Tab == 'Call Graph'">