[Tagging] usage of maxspeed:practical is described as recommended on wiki

[Richard Z.]

On Mon, Aug 25, 2014 at 10:43:36AM +0200, Pieren wrote:
> I would modify the section [1] by replacing "it is recommended" by "it
> is suggested" and adding at the end a note saying that a large part of
> the community consider these two tags -smoothness and
> maxspeed:practical - too subjective.

I have rewritten it even a bit more, hope it is better now.
Also changed the old proposal page a bit.


Richard