Add path to common directory into user-story-final

Add path to common directory into user-story-final.
For img and json resources.
Change FileName to launch user-story final

Change index.html to movie_board.html
Fixe EvalException when launch user-story-final.

When launch movieBoard, there is an EvalException("Filters must be a
one-argument function).
It's declaration of asStars function in poster.dart.
Fixe to build correctly movieBoard

Old references to index.html
Merge pull request #4 from stefrem/CorrectionStef

Correction stef