refs #6841 -- added copying experiment info from existing workspaces.
refs #6881 A bit less shared pointers.
refs #6841 added test for experiment info
refs #6841 not it is full test for EI
refs #6841 typo fixed
refs #6841 now try to restore EI deleted earlier.
refs #6449 correct EI copying
refs #6841 as MDEvent test helper has experiment info now,

FakeMDTest can not add one. Hopefully fixed.
refs #6841 some typing error
Merge remote branch 'origin/feature/6841_MergeMDAddsExperimentInfo'