Consistent global variables declaration

Variables before missing coma are considered as declared variables while those after are considered as undeclared.
The major difference is that undeclared variable can be deleted with delete statement.
before PR : 
delete scoreNeededToWinDisplay; //false
delete maximumContactsAllowedDisplay; // true
after PR :
delete scoreNeededToWinDisplay; //false
delete maximumContactsAllowedDisplay; // false