Add QualifyingElement linter

Change-Id: I9f110293263f3f3889f706f1c1676829a6300ce3
Reviewed-on: http://gerrit.causes.com/43816
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane.dasilva@brigade.com>
Fix QualifyingElement nits

Change-Id: I89da36e21f94e8fc149fd3e7906d3a8474b64bf8
Reviewed-on: http://gerrit.causes.com/43817
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane.dasilva@brigade.com>
Update changelog with QualifyingElement linter

Change-Id: I78b4688c1be24dc63749e18f6e894988d88b6170
Reviewed-on: http://gerrit.causes.com/43818
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane.dasilva@brigade.com>