Online shift exchange between roster members has been added

[aheller]

The FloorSchedule.info system now has the capability for roster members to exchange their shifts with another roster member via online schedule interaction. This action may be initiated by merely clicking on the shift assignment they wish to exchange out of and then clicking on the shift assignment desire to exchange into. In addition, a roster member may just release their assigned shift so that any other roster member who would like to fill that shift time may do so. Appropriate email notifications are sent to affected roster members advising them of available shifts, accepted shift exchange requests and links to the updated schedules.