Code improvement for SANS reduction

Rebuild _extract_run_details to use FileFinder instead of trying to find
the file itself.

re #8055
LOQ and SANS2D commands change the default instrument

re #8055
Remove not needed options for sans reduction

Remove spec_min and spec_max attributes to Tide up the code.

re #8054
Merge remote-tracking branch 'origin/feature/8054_remove_old_attributes'