[UI][CORE][DB] old thumbnails in user directory are removed at startup
[UI][CORE][DB] fixed horrible bug in removing thumbnails
[UI] keep in mind current id to avoid re-opening of popups in the same place
[UI][CORE] MyPlaces rows can now be deleted via right-click contextmenu
[UI][CORE] edit item via right-click contextmenu almost complete
[UI][CORE][DB] edit item/album name complete, still to be implemented through map, accessible via F2 key too
[UI] added date, if available, in album row tooltip
[UI][CORE][JS] map bounds expanded to fit all the markers
[UI][CORE][JS] fixes: map bounds correctly enlarged, rename feature improved
[UI] fixed misbehavior in edit item
[UI][CORE][OTHER] MapItem renamed to Marker to be consistent with js/html stuff, removed unused parameter compiler warning
[UI][CORE][JS] added error page, intercepted connection not available, added status bar