[frontend/backend] coded functionality into buttons for viewing Transactions based on filtered elements

[Front End] created all dropdowns with proper enumerations for Roles and Transaction Types; added function buttons

[dao backend] modified TransactionDAO.java to include SQL for roles; displayed all necessary transaction data to viewTransactionLogs.jsp; created necessary bean and loader to support roles

[testing] created ViewTransactionLogsTest.java and tested that admin and tester can both successfully get to new View Transactions Page

[security] allowed for admin and tester to access viewTransationLogs.jsp from their respective menu pages