UC14: Reqeust Biosurveillance

This PR contains all of the first sub-flow [S1] of UC14. Specifically, this PR:

• Updates unit tests for malaria detection to confirm with the requirements
• Fixes the malaria detection algorithm to conform with the requirements
• Adds additional DAO functionality which will be used in [S2] and [S3]
• Updates the selenium tests to handle the alternate flows [E1], [E2] and [E3]
• Fixes UI bugs in the existing implementation

To run the tests, do the following:

1. mvn install -DskipTests
2. mvn test -Dtest=ViewDiagnosisStatisticsActionTest
3. mvn test -Dtest=ViewDiagnosisStatisticsTest
4. mvn test -Dtest=OVDiagnosesTest