Finished Manager Transactions, update other files
Merge pull request #14 from ellina-s/ellina

Ellina
Fixed bugs in ManagerTransaction completed clerk
Changed datatypes to date to make returns easier.
Merge pull request #15 from ellina-s/arjan

Arjan
Merge branch 'master' of https://github.com/ellina-s/cs304 into ellina
Minor comments changes