Presets: Add "height" for cliff

[schoschi]

In josm/trunk/data/defaultpresets.xml respectively https://josm.openstreetmap.de/browser/trunk/data/defaultpresets.xml in

        <item name="Cliff" icon="presets/cliff.png" type="node,way,closedway,relation" preset_name_label="true">
            <link href="http://wiki.openstreetmap.org/wiki/Tag:natural=cliff"
                  de.href="http://wiki.openstreetmap.org/wiki/DE:Tag:natural=cliff"
                  fr.href="http://wiki.openstreetmap.org/wiki/FR:Tag:natural=cliff"
                  ja.href="http://wiki.openstreetmap.org/wiki/JA:Tag:natural=cliff"
                  pt_BR.href="http://wiki.openstreetmap.org/wiki/Pt-br:Tag:natural=cliff"
                  ru.href="http://wiki.openstreetmap.org/wiki/RU:Tag:natural=cliff" />
            <label text="A steep rock face exposure, with a significant vertical, or near vertical (leave the lower face to the right of the way)." />
            <space />
            <key key="natural" value="cliff" />
            <text key="name" text="Name" />
        </item> <!-- Cliff -->

add

<text key="height" text="Height" />

after name key (and localized presets ones, too).

Why? As discussed at ​http://wiki.openstreetmap.org/wiki/Talk:Tag:natural%3Dcliff the height=* is one of the most important attributes of a cliff, e.g. for the meta question "what's a cliff and what just a notch?" but also for real world aspects like domination & visibility (a 6m cliff might be hidden by trees/waves/bushes, a 500m drop not). As long as height is not within JOSM templates, it's not mapped often, thus making search, rendering etc. impossible.

[Klumbumbus]

In 8082/josm:

fix #11130 - unify text for height and add it to natural=cliff