TMDM-7693 : Root item node model adapt custom layout
TMDM-7860: "'Recreate table' didn't work when edit the name of field"

Fix incorrect table name for many-to-one and one-to-one relation tables (used in Scattered mapping strategy).
Adds unit test for issue.
(https://jira.talendforge.org/browse/TMDM-7860)
TMDM-7874: "HTML Messages response from tMDMBulkLoad does not render in Studio Console"

Exception now include only HTTP status when a error (>= 400) occurs.
(https://jira.talendforge.org/browse/TMDM-7874)
TMDM-7874: "HTML Messages response from tMDMBulkLoad does not render in Studio Console"

Exception now include only HTTP status when a error (>= 400) occurs (amended version to keep behavior in case of HTTP 5xx).
(https://jira.talendforge.org/browse/TMDM-7874)
Merge branch 'maintenance/5.6'