Merge pull request #682 from NileemaJadhav/HR-396-fte

--HR-396 Modification to display FTE in fraction
--HR-393 handle upgrade and option group related changes
Merge pull request #684 from PoonamNalawade/Hr393

--HR-393 handle upgrade and option group related changes
--HR-350 List currently employed contacts
--HR-396 modification for option value change and FTE for hours
--HR-398 Leave screen changes for visually distinguish
--tweaks
Merge pull request #686 from NileemaJadhav/HR-396-hour

--HR-396 modification for option value change and FTE for hours
Merge pull request #685 from NileemaJadhav/HR-350

--HR-350 List currently employed contacts
Merge pull request #687 from PoonamNalawade/HR-398

--HR-398 Leave screen changes for visually distinguish
--HR-396 modification in month, year calculation for FTE