Do not throw a fatal error if no keys. Browser console only.

protogeni/scripts/updategeniuser.in

 #!/usr/bin/perl -w
 #
-# Copyright (c) 2008-2014 University of Utah and the Flux Group.
+# Copyright (c) 2008-2015 University of Utah and the Flux Group.
 # 
 # {{{GENIPUBLIC-LICENSE
 # 
@@ -262,7 +262,8 @@ sub UpdateSSHKeys()
 	@keys = @{ $response->value()->{$user_urn} };
     }
     if (!@keys) {
-	fatal("No keys returned for user!");
+	print STDERR "No keys returned for user!\n";
+	return 0;
     }    
     my $filename = TBMakeTempFile("geniuserkey");