add battle, monster and person objects

battle simple engine
add battle simple engine and console log
new test_battle file
monster and person classes
change person class
Merge branch 'master' into battle_mode

Conflicts:
	app.js
change port
Fix monster check
bug in battle mode
Merge branch 'master' of https://github.com/Maciejfsafew/TWO_game
logout + check field name