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 new conditions to handle other split configurations
Fixed reassignment targets for split
Possible fix for rspec tests after changes in UpgradeProcessor