Fix : extrafield errors
Fix : remove associated users when company is deleted
Fix : Product supplier prices were not working anymore due to bad SQL
FixDosFiles
Merge branch 'develop' of github.com:Dolibarr/dolibarr into mkoevols

Conflicts:
	htdocs/core/lib/company.lib.php
Fix : typo
Merge pull request #1983 from atm-maxime/mkoevols

Fixes on extrafields, product supplier prices and user / company association deletion