Add column deathdate_estimated to person table - TRUNK-2768

TRUNK-2768
Liquibase update
Added property deathdateEstimated to Person.hbm.xml

TRUNK_2768
Added deathdateEstimated

TRUNK-2768
Removed method isDeathDateEstimated() from Person.java

TRUNK-2768
Changes re Rafal's suggestions.

TRUNK-2768
Changed
deathdateEstimated = person.isDeathdateEstimated();
To
deathdateEstimated = person.getDeathdateEstimated()

isDeathdateEstimated() has been removed

TRUNK-2768
Fix code causing error in test
Add checkbox for deathdateEstimated to editPersonInfo.jsp

TRUNK-2768
Changed shortPatientForm.jsp, editPersonInfo.jsp for deathdateEstimated.

TRUNK-2768
Added test for deathdateEstimated to PatientServiceTest.java

TRUNK-2768

TRUNK-2768
Fix problem preventing deathdate_estimated column in Person table
from getting set.

TRUNK-2768
Cleaned up comments

TRUNK-2768
Cleaned up Comments