TMDM-7693 : Changing elements' order in complex type in custom layout doesn't infect web ui

TMDM-7693 : Revert old code
TMDM-7759 Display "Open Task" button when match group has only 1 record.

Conflicts:
	org.talend.mdm.webapp.browserecords/src/main/java/org/talend/mdm/webapp/browserecords/server/actions/BrowseRecordsAction.java
Merge branch 'maintenance/5.6'