plotDelayQuantiles: Illustrate empirical delay distribution.
In thl-mjv/euromomo: EuroMoMo algorithm

Show empirical and model based median of delay distribution as a function of occurence time t.

1 2	plotDelayQuantiles(rT, w = 1, ISOweeks, quantiles = c(0.1, 0.5, 0.9), col = 1, lty = 1, lwd = 2, main = NULL)

`rT`	- reporting triangle as it would be at the end.
`w`	- half-width of moving window
`ISOweeks`	Vector of ISO week dates where to show the result
`quantiles`	- which quantiles to show
`col`	Color of the quantiles, see `plot`.
`lty`	Line types, see `plot`.
`lwd`	Line width, see `plot`.
`main`	- Title of the plot (tpyically the label of the age group)