fixed reference to non-existent constant
add byebug to test group
fix for comparing empty strings and nulls when searching for duplicates
when downgrading to synonym, unlink from former parent
potentially fixes a lot of things
Added output_reassignments table and reworked the builders

Conflicts:
	app/models/listing_change.rb
	app/models/nomenclature_change/reassignment_processor.rb
Deleted debbuger line
added output reassignment validation specs
specs for output reassignments processing
reconciled post-merge issues
Merge branch 'output_reassignments' into nomenclature_changes
Fixed changes on input and synonyms for the split
Fixed synonym upgrading incorrectly. Handled name reassignments on input. Added tests.

Conflicts:
	Gemfile
reverted changes in upgrade processor which don't seem to be related to delete processor
Merge branch 'delete_unreassigned_processor' into nomenclature_changes
Added global selection for each split output in the wizard
removed obsolete lump steps
fixed typo
Created view helper for global selection