Added CORE_LANG='fr_FR' requirement for PU_test_dcp_importCVDOC.php (refs #4158)
Merge pull request #945 from eguaj/3.2-A4158

Added CORE_LANG='fr_FR' requirement for PU_test_dcp_importCVDOC.php (fixes #4158)
Add callback to restricted parameter for ApiUsage (refs #4123)
Error if no value for needed argument (refs #4128)