Reporters: fix typo and support 'perModuleEmail'
Reporters: fix typo and support 'perModuleEmail'

hudson.maven.reporters.Mailer is a typo as it never existed.

Support "Send email for each failed module" via perModuleEmail attribute.

Change-Id: I6ef493a097a10326b67295775a9522c95c2fee2f

phinexus/jenkins-job-builder,gforcada/jenkins-job-builder,rsig/jenkins-job-builder,onshape/jenkins-job-builder,phinexus/jenkins-job-builder,dataxu/jenkins-job-builder,puppetlabs/jenkins-job-builder,puppetlabs/jenkins-job-builder,rsig/jenkins-job-builder,dataxu/jenkins-job-builder,onshape/jenkins-job-builder,OSSystems/jenkins-job-builder,tamac-io/jenkins-job-builder,wikimedia/integration-jenkins-job-builder,gforcada/jenkins-job-builder,OSSystems/jenkins-job-builder,wsoula/jenkins-job-builder,puppetlabs/jenkins-job-builder,OSSystems/jenkins-job-builder,wsoula/jenkins-job-builder,gforcada/jenkins-job-builder,twc-openstack/jenkins-job-builder,wikimedia/integration-jenkins-job-builder,twc-openstack/jenkins-job-builder,wikimedia/integration-jenkins-job-builder,wsoula/jenkins-job-builder,puppetlabs/jenkins-job-builder,rsig/jenkins-job-builder,dataxu/jenkins-job-builder,onshape/jenkins-job-builder,phinexus/jenkins-job-builder,gforcada/jenkins-job-builder,gforcada/jenkins-job-builder,phinexus/jenkins-job-builder,wikimedia/integration-jenkins-job-builder,tamac-io/jenkins-job-builder,wikimedia/integration-jenkins-job-builder,phinexus/jenkins-job-builder,OSSystems/jenkins-job-builder,twc-openstack/jenkins-job-builder,wsoula/jenkins-job-builder,rsig/jenkins-job-builder,tamac-io/jenkins-job-builder,onshape/jenkins-job-builder,twc-openstack/jenkins-job-builder,tamac-io/jenkins-job-builder,dataxu/jenkins-job-builder