UPDATE ALL CLASSES
Checked the ToDo comments
DELETED CLASS Session, Updated Game, Quests
Added the code of Session in Game, added an array of recruitment quests
in Quests
UPDATED Classes Game, QuestStaff
Added the possibility to do recruitment quests in  Game and added a
method to get the reward in QuestStaff
UPDATED Game, Overlord, Quests, World
Added some quests, began to implement a system of automatic assault on
the player (problems of balancing)