Zh GoogleMap component, a few bugfixes

Extensions
Hi. I've got time and added some bugfixes: - in some cases you can't override clusterer icons (when active different icons for placemark clusters, grouped by Placemark Group attribute) - for admin panel (for j.3.x) when you save in details, any detail tab was changed to first - fixed warning for "Strict Standards: Declaration of ZhGoogleMapTableZhGoogleMap::_getAssetParentId() should be compatible with JTable::_getAssetParentId(JTable $table = NULL, $id = NULL)"in admin panel I added class names for Routes (description, totals), and for Map Header and Footer. Now you can override styles in your template not only by div ID, but also by class name. Refreshed translation files.
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