HR-228 : Implement absence listing report
HR-228 : absence listing
limit the activity results to absence types
more work
Merge pull request #289 from NileemaJadhav/HR-236

--HR-236 Change the filter widgets from single-selects to checkbox multi-selects
Merge pull request #290 from yashodha/absence

Absence listing report
--HR-236 CSS chnages