A Freddie generated ISIS histogram Nexus with IDF. re #8214
Refs #9342 Remove IndirectTranmission test from system tests
Add systemtest testing embedded info in nexus. re #8214

More specifically here testing against ISIS raw nexus histogram format
Merge remote-tracking branch 'origin/feature/8214_isis_hist_nexus'
Add in a set of .expected files for additional Load checks

Refs #10150
Add some more test files for Load along with .expected files.

Refs #10150
First cut at LoadTest that covers what the unit test was doing.

Refs #10150
Extend LoadTest to cover the functionality that the unit test covered.

There are also extra checks to confirm that the multi-file loading
behaviour is correct.
Refs #10150
Use the correct variable name in the .expected files.

Refs #10150
Fix bug with .expected files

Refs #10150
Merge remote-tracking branch 'origin/maint/10150_improve_loadtest_performance'
Merge remote-tracking branch 'origin/feature/9342_indirect_py_alg_testing'
Merge branch 'master' into bugfix/9862_LoadSQWproblems