Cp-10

Added features of sorting and deleting (though not really deleting). 
We already have a MysqlJDBC class variable so a new one shouldn't be declared here. Besides, you're not even using the "m" you created!
In this method just have:
```
try {
    String sql= "UPDATE questions SET hidden = 'T' WHERE que_id = " + questionId + ";";
    mysql.insert(sql);
} catch (SQLException e) {
    e.printStackTrace();
}
```