Option to disable zone name popup for clicked zone & ability to read the clicked zone's name programatically

[Ladis82]

The original behaviour always shows a bubble with a clicked zone's name. To be able to integrate this library into more complex projects, people may want to disable showing this bubble. The new optional parameter allows that. Default is the original behaviour.

[Ladis82]

Example to disable the zone name popup:
var track = new L.KML(kml, { disablePlacePopup: true });

Is there some documentation where I should add this? (I see people can just read pull requests' comments 😏)

[Ladis82]

Added zone name in the KML layer's data to be able to read the clicked zone's name programatically. The previous commit allows to disable the bubble with the clicked zone's name, this commit allows to read the clicked zone's name in the code of projects using this library.

Example (adding the KML layers into a feature group, instead of directly into the map, allows to catch events, e.g. click):

var featureGroup = L.featureGroup().addTo(map).on("click", function (event) {
    alert('lat=' + event.latlng.lat + ', lng=' + event.latlng.lng + '\nzone name=' + event.layer.options.zoneName);  // renamed "name" to "zoneName", see a later comment
});

$.ajax({ url: 'https://server/file.kml' })
    .done(function(kml) {
        var track = new L.KML(kml, { disablePlacePopup: true });    // disable the automatic popup bubble with the zone's name
        featureGroup.addLayer(track);                               // add it into the feature group catching the click event, instead of directly into the map
    });

[Ladis82]

Real life example (not finished, thus waits for the first click on color zones):
Snow load zones of Germany according to Eurocode

[Ladis82]

Hm, looking at PR 16, I renamed the field differently than just "name". So now it's my "zoneName" for the zone inside the KML layer and doesn't affect the layer's "name" from PR 16.