optimize view project for make difference between Project Manager and Scrum Master
a product owner can select his project(s) only when create a user story
FIX security : developer can write on user story
add rights for product backlog stages
update groups when update module
header of user story visible only for developers of project
user story is readonly when state not draft
fields project, release and sprint are readonly when user story != draft
delete obsolete code
FIX right partner read for developer
modify test file for new fields