Fixes #4209: Get back the rule from backend to disable it, and log more information.
Merge pull request #377 from fanf/bug_4209/fixe_in_error_rule_tempering

Fixes #4209: Get back the rule from backend to disable it, and log more information.
Merge branch 'branches/rudder/2.4' into branches/rudder/2.6

Conflicts:
	rudder-web/src/main/scala/com/normation/rudder/web/components/RuleGrid.scala