HTML-543 - Filling out a form should be able to mark a patient as dead
HTML-543 - Filling out a form should be able to mark a patient as dead (adding call to patientService.savePatient)
HTML-543 - Filling out a form should be able to mark a patient as dead
HTML-543 - Filling out a form should be able to mark a patient as dead (moving constant to constants class)
HTML-543 - Filling out a form should be able to mark a patient as dead and set cause of death
HTML-449: Updated velocity methods to accept string

Changed definition of allEncounters() and latestEncounter to accept strings.

Used utility method instead of private method as adviced