Merge pull request #72 from InnovaLangues/master-eric

Fix bug in pathController (ressourceNode vs Id) and placeholder.
some visual changes & excluded resource management. to do : cleaning step2resourceNode for excluded resources
fix deletePath
Fix bug list path delete.
t debug
debug in progress
Merge remote-tracking branch 'origin/master-eric' into master-eric

Conflicts:
	Resources/views/path_workspace.html.twig