Show scale next to zoom levels at tile caching dialog

[simgislab]

currently: min: 8 max: 15

should be: min: 8 (20 km) max: 15 (150 m)

http://wiki.openstreetmap.org/wiki/Zoom_levels

[4eRTuk]

Show scale per pixel?

[simgislab]

this is too much, zoom level + scale is enough

[simgislab]

Add the same additional info here too: