grading - tooltip for grading UI link wip

cms/templates/overview.html

@@ -175,7 +175,7 @@
               <h4 class="status-label">Not Graded</h4>
               
               <a class="menu-toggle" href="#">
-                <span class="ss-icon ss-standard" data-tooltip="Holy Shit!">&#x2713;</span>
+                <span class="ss-icon ss-standard" data-tooltip="Make this gradable">&#x2713;</span>
               </a>
                               
               <ul class="menu">