Add missing language string game:addinstance

CHANGES.md

@@ -3,6 +3,7 @@ Changes in version 3.36.31.1 (2015123101)
 - New: Disable summarize of attempts.
 - CONTRIB-5605: Quotation marks breaks the js-code in game Cryptex.
 - Prevent Style Override of Crossword
+- Add missing language string game:addinstance
 
 Changes in version 3.36.29.1 (2015122901)
 ------------------------------------------------------------------

lang/en/game.php

@@ -72,6 +72,7 @@ $string[ 'win'] = 'Congratulations !!!';
 $string[ 'finish'] = 'End of game';
 
 // File db/access.php.
+$string[ 'game:addinstance'] = 'Add a new game';
 $string[ 'game:attempt'] = 'Play game';
 $string[ 'game:deleteattempts'] = 'Delete attempts';
 $string[ 'game:grade'] = 'Grade games manually';