update the calculation of delivery time displayed in the shopping cart

Signed-off-by: Takashiro <takashiro@qq.com>
query orders of last 7 days by default

Signed-off-by: Takashiro <takashiro@qq.com>
fix a bug that countdown prices can't be deleted

Signed-off-by: Takashiro <takashiro@qq.com>
expand the final cell of statistic data rows

Signed-off-by: Takashiro <takashiro@qq.com>
popup tips above the storage editing cells

Signed-off-by: Takashiro <takashiro@qq.com>
add a notice onto the setting page of delivery time

Signed-off-by: Takashiro <takashiro@qq.com>
show the number of orders on the main button list

Signed-off-by: Takashiro <takashiro@qq.com>