fix step->instructions to make it  nullable & path removing working now
WIP resource picker
fix #53
ref #44 fix : in the Editor, when editing a step in the scenario panel, tooltip about StepWho and StepWhere display the id of the who/where instead of the name.
Merge pull request #60 from InnovaLangues/master-eric

ref #44 fix : in the Editor, when editing a step in the scenario panel, ...
Add dependency to new Angular plugin
integration proto angular END !
preview step in template save
Merge branch 'master' of github.com:InnovaLangues/PathBundle

Conflicts:
	Resources/public/js/Editor/Partial/scenario.html
Fixes #44
Merge remote-tracking branch 'origin/master-axel' into master-axel