[Tagging] cleanup of the key natural

[Friedrich Volkmann]

On 17.10.2014 15:49, Friedrich Volkmann wrote:
> On 17.10.2014 15:11, Martin Koppenhoefer wrote:
>> "mountains related"
>> - a cave doesn't have to be in the mountains
>> - a cliff doesn't have to be in the mountains
>> - a "glacier" is water related and temperature related, but it doesn't
>> require mountains
>> - a rock can't only be found in the mountains
>> - a volcano isn't "mountain related" (always)
> 
> Let's rename "mountain related" to "landforms" and move "glacier" to "water
> related", and everything is fine.

I was eager to do that, so I just did it, plus some more reordering. Please
review.

-- 
Friedrich K. Volkmann       http://www.volki.at/
Adr.: Davidgasse 76-80/14/10, 1100 Wien, Austria