Add special rendering for shop=laundry and shop=dry_cleaning

[kocio-pl]

We should start rendering shop=laundry and shop=dry_cleaning, probably with this icon from osmfr-cartocss fork:

https://github.com/cquest/osmfr-cartocss/blob/master/symbols/laundry.svg

[It was proposed in meta-issue #1402]

[kocio-pl]

My sketches:

1. 
2. 

[kocio-pl]

Some more:
3)
4)
5)

I like 5) the most, then 3).

[kocio-pl]

Test - for me it works good:

[lest69]

It looks too much like a camera to me.

What about a shirt partially inside of a washing basin? It may be old-fashioned and doesn't accurately depict the dry-cleaning process, but it would convey the concept of the cleaning of clothing. I'm not sure if you can fit that into the available space, though.

[kocio-pl]

The idea was not bad, but I think it doesn't work too good:

(BTW: the merge of PR was done just before the moment).