rewrite code of validaters and add function generate_answers
file xml to tests
update unittest
fixied error in survey
update forms
delete old code (forms.py)
update tareas
change localitation of game.py
delete old references
Merge branch 'master' of github.com:nukru/frame_game_theory
implemented login from email/password
fixed bug now check if the answer had to write or no (subquestion)