Refs #10061 added files for loader
Refs #10061 made changes for loading multiple files into one workspace
Refs #10061 changes for IDF and improved loader speed
Refs #10061 improved error handling
Refs #10061 attempting to fix build warnings
Refs #10061 attempting again to fix build errors
Refs #10061 attempting again to fix build errors
Refs #10061 attempting again to fix build errors
Refs #10061 fixing final warning
Fix cppcheck warnings.

Refs #10061
Revert changes to Load that have broken the LoadTest system test

This reverts the changes to Load from commits
  - 67348e40e93910e7b3d1db0c3f7cefc5942b9d76
  - cf334a95bbd34359b704644f469757920814432b

We need a better way for a specific loader to request that it will handle
all files that Load has found.
Refs #10061
Refs #10061 add unit test
Refs #10061 rollback
Refs #10061 tests now completing locally
Merge remote-tracking branch 'origin/feature/10061_fits_loader'