Merge branch 'star-button-fork-count-increase' into 'master'

Starring project only increases star count

This is instead of increasing star & fork count

Fixes #11396

![star-count](/uploads/9a1d569393bc051d1a019f0340eec957/star-count.gif)

cc. @jschatz1 

See merge request !2504

app/assets/javascripts/star.js.coffee

@@ -6,7 +6,7 @@ class @Star
       $starIcon = $this.find('i')
 
       toggleStar = (isStarred) ->
-        $this.parent().find('span.count').text data.star_count
+        $this.parent().find('.star-count').text data.star_count
         if isStarred
           $starSpan.removeClass('starred').text 'Star'
           $starIcon.removeClass('fa-star').addClass 'fa-star-o'