Added report period field widget which combines two date parameters into one month select list
Merge branch '14.2-dev' of github.com:I-TECH/openmrs-module-kenyaemr into 14.2-dev
Updated module dependencies: calculation, uiframework, reporting
Merge branch '14.2-dev' of github.com:I-TECH/openmrs-module-kenyaemr into 14.2-dev
Renamed the IsTransferInCalculation class, added a custom converter for calculation results, added transferin date calculation and their respective tests