Fix files that should not mix tab and spaces indent.
Merge pull request #1319 from grandoc/3.5

add a Social contributions type and fix some language stuff
Fix: business rule to protect button and action was not synchronized
Merge branch '3.5' of git@github.com:Dolibarr/dolibarr.git into 3.5
Merge branch '3.5' of https://github.com/Dolibarr/dolibarr into 3.5