closing feature #4455
allows administrators to upload form overlays for editing and presentation
closing feature #4549
adding possibility to display values within a simple combo box (instead of autocompletion)
Merge branch 'ney-feature-templateDesigner' of https://github.com/NicolasEYSSERIC/Silverpeas-Core into master
Fix errors at a template creation with the overlays specified
Fix the documentation about securing silverpeas