add attribute to step2resource entity. update pathContrlr. Add migrations
Merge pull request #31 from InnovaLangues/master-arnaud

add attribute to step2resource entity. update pathContrlr. Add migration...
new entity to manage excluded resources for a step.
Merge pull request #32 from InnovaLangues/master-arnaud

new entity to manage excluded resources for a step.
fix entity table for ExcludedResource. New migration
Merge pull request #33 from InnovaLangues/master-arnaud

fix entity table for ExcludedResource. New migration
Merge pull request #34 from InnovaLangues/master-axel

Integration path editor angular proto
path editor angular proto integration