update bargaining instructions
Merge pull request #8 from oTree-org/bargaining

update bargaining instructions
trust: add result, bonus, total
Merge pull request #9 from oTree-org/trust-game

trust: add result, bonus, total
Merge pull request #7 from oTree-org/traveler-dilemma

Traveler dilemma
traveler_dilemma: fix questionnaire page