Fixed a couple typos in method definitions and stuff.
Added logic for certifying key persons.
Fixed some typos relating to updating unit credit splits. Removed a duplicate test case.
Removed a TODO because it's done.
Changed the wording of a feature description.
Improved the wording of the feature description and various scenario descriptions.
Merge remote-tracking branch 'origin/development' into development
Changed the When steps to a more appropriate spot in the feature file.
added a rescue for combined_credit_split_errors in the case where a co-investigator has not been added to a prop