MOB-1530

**DO NOT MERGE YET**
What do you think about this:

`function trackMapCreation(tileSetData) {
	var tileSetId = tileSetData.tileSetId,
		label = tileSetData.type + '-map-created' + (!tileSetId ? '-with-new-tileset' : '');

	utils.track(utils.trackerActions.IMPRESSION, label, tileSetId);
}`