Add order to tasks and lists

server/ajax/list/list.go

@@ -14,6 +14,7 @@ type List struct {
 	ShowCompl int    `json:"showCompl"`
 	ShowNotes int    `json:"showNotes"`
 	Hidden    int    `json:"hidden"`
+	Max       int    `json:"max"`
 }
 
 func New(r *http.Request) (*List, error) {
@@ -47,6 +48,11 @@ func (l *List) SetHideList(state bool) {
 	set(state, &l.Hidden)
 }
 
+func (l *List) NextIndex() int {
+	l.Max += 1
+	return l.Max
+}
+
 func set(b bool, i *int) {
 	*i = 1
 	if !b {