Create time() and related methods for Output objects (#2995)
Updating tests for changes to restart
(#2995)
Created new gold files for restart iteration adaptive timesteppers
(#2995)
Moved isRestarting/isRecovering to MooseApp
(#2995)
Removed some commented code (#2995)
Merge pull request #3044 from aeslaughter/time-2995

Make output time perform differently depending on Transient vs. Steady executioners
Merge commit '93e12578ddc1fdad30886bf199ec86a1026b4f7d'