Modify : when adding a todo item, Solve The problem ToDo_Deadline_date is null
Success : Draw Graph
Modify : Solve the problem child spinner listener not working, when selected parent spinner
Merge branch 'ToDoList' into Visualization
Modify : Solve the problem child spinner listener not working in Visualization, when selected parent spinner
Success : Show Completed Count and Uncompleted Count
Modify : update color values