shift email notify states

Actor	Action	Email notified parties	Notes
Manager	Request new shift	IV Admin
Manager	Request shift change	IV Admin
Manager	Request shift cancelation	IV Admin
IV Admin	Approve shift request	Manager
IV Admin	Approve shift change request	Manager	Email to Dr if shift is assigneded
IV Admin	Approve shift cancelation request	Manager	Email to Dr is shift is assigned
IV Admin	Deny shift request	Manager
IV Admin	Deny shift change request	Manager
IV Admin	Deny shift cancelation request	Manager
IV Admin	Assign shift to Dr	Manager & Dr
IV Admin	Unassign shift to Dr	Manager & Dr
Dr	Assign shift to self	Manager & Dr
IV Admin	Unassign shift to self	Manager & Dr