Fix project star tooltip on the fly.

Introduced new util called updateTooltipTitle.

app/assets/javascripts/lib/common_utils.js.coffee

 ((w) ->
 
+  window.gl or= {}
+  window.gl.utils or= {}
+
   jQuery.timefor = (time, suffix, expiredLabel) ->
 
     return '' unless time
@@ -21,4 +24,13 @@
 
     return timefor
 
+
+  gl.utils.updateTooltipTitle = ($tooltipEl, newTitle) ->
+
+    $tooltipEl
+      .tooltip 'destroy'
+      .attr    'title', newTitle
+      .tooltip 'fixTitle'
+
+
 ) window

app/assets/javascripts/star.js.coffee

@@ -9,9 +9,11 @@ class @Star
         $this.parent().find('.star-count').text data.star_count
         if isStarred
           $starSpan.removeClass('starred').text 'Star'
+          gl.utils.updateTooltipTitle $this, 'Star project'
           $starIcon.removeClass('fa-star').addClass 'fa-star-o'
         else
           $starSpan.addClass('starred').text 'Unstar'
+          gl.utils.updateTooltipTitle $this, 'Unstar project'
           $starIcon.removeClass('fa-star-o').addClass 'fa-star'
         return