Merge pull request #33 from AnnaStorozhenko/master

WriteAbsenceData() method in AbsenceController was modified
Update CONTRIBUTING.md
Update CONTRIBUTING.md
Issue # 10 BT Destination responsible manager to be informed about new BT fixed
Merge pull request #37 from tmandzak/master

Update CONTRIBUTING.md
Merge pull request #39 from Bohdan-Tereta/master

Issue # 10 BT Destination responsible manager to be informed about new BT fixed
Merge pull request #40 from AnnaStorozhenko/master

GetBirthdays() method in EmpController corrected UnitTests added
Issue #32 Calendar: vertical wheel scroll for name list to be added solved
Merge pull request #41 from Bohdan-Tereta/master

Issue #32 Calendar: vertical wheel scroll for name list to be added solved
small corrections were made in AbsenceController and EMPController