Issue 144

Change the declaration of  the `name` member inside `Player` structure form `const char *name` to `char *name`. The memory for player's name is allocated dynamically inside `team_createPlayer` function and the content of the `name` argument is copied to `newPlayer->name`. The name variable in the function `newPlayer` is dealocated. Also, when a player is deleted the memory occupied by it's name is dealocated.