Added dialog box to registration form to allow birthdate to be calculated from age
Several changes
* Add indicators HV03-1 and HV03-2
*Format the column name
*Added cohort definition, indicator definition and unit tests for  HV03-1 and HV03-2
*Mapped the indicators on the excel template
Merge branch 'master' of github.com:ningosi/openmrs-module-kenyaemr