allow markers to use pps closes #3324
scaling to nodal variable value pp Refs #3326
adding scaling to pps test Refs #3326
Merge pull request #3327 from peredm/scaling_3326

Scaling 3326
Merge commit '819ea2ac826bc30dad2095b6e3fb4cd83a707626'
Merge pull request #3325 from friedmud/pp_maker_3324

allow markers to use pps
Merge commit 'b200d595ebc5a2751623ef23049552d8a0bcfb54'