Nick-Nature-1 arpack - EDIt Nick-Nature-2 added

[Nickillus]

Just a heads up to point out that Nick-Nature-2 has had a few sticker presets added and tweaked.

Artefacts hopefully removed from the Bad-Hair-Day variants.
Solid Pebbledash added (Pebbledash-2)
A second scratty grass variant added.
A mottle brush called Water-Damage-1 added.

EDIT- I can still see some artefacts in Bad-Hair-Day-1 in particular - dammit. Sorry chaps. More tweaking needed on another day.