#74 Aggregation. First version.
#74 Aggregation. First version.

Need to add validation and tech doc

KenanHrnjic/timesheet,mifort-org/mifort-timesheet,BinuraG/platformer-timesheet,AlexKolonitsky/mifort-timesheet,mifort-org/mifort-timesheet,BinuraG/platformer-timesheet,AlexKolonitsky/homogen,KenanHrnjic/timesheet,AlexKolonitsky/homogen,Alzar95/mifort-timesheet,KenanHrnjic/timesheet,Alzar95/mifort-timesheet,AlexKolonitsky/mifort-timesheet,mifort-org/mifort-timesheet,Alzar95/mifort-timesheet,BinuraG/platformer-timesheet