Text in contextual div not visible on mobiles.

git-svn-id: http://svn.redmine.org/redmine/trunk@15995 e93f8b46-1217-0410-a6f0-8f06a7374b81

public/stylesheets/responsive.css

@@ -596,7 +596,6 @@
     margin-bottom: .5em;
     padding-left: 0; /* reset left padding in order to use whole space */
     white-space: normal;
-    color: transparent;
   }
 
   #content>.contextual a,