Merge pull request #819 from FHenry/develop

Fix : admin ODT doctemplate path commande/project
Better error management
New: Add module opensurvey. Final. Test are welcome.
Merge branch 'develop' of git@github.com:Dolibarr/dolibarr.git into develop
Fix: Better error management
Qual: Better error management.
Qual: Uniformize code for canvas
Fix: Regression