Updating MOOSE headers - closes #2735
Fixing un-initialized value (#2721)
Fix timestep tolerance issue #2737
Merge pull request #2738 from jasondhales/multiapp_2737

Fix timestep tolerance issue #2737
Merge pull request #2739 from aeslaughter/valgrind

Fixing un-initialized value
Merge pull request #2736 from permcody/header_update

Updating MOOSE headers