* use Zoom control instead of ZoomPanel
* wrap date line
* attribution control already at the bottom of the map
* use html entities for the copyright symbol
* layer has 17 levels, update numZoomLevels
Sticking with sans-serif gives a more uniform experience on desktop Webkit, Safari on iOS, and the default Android browser.
Using `-webkit-tap-highlight-color` gets rid of the blue highlight when clicking on the map tiles or zoom control.
Now the application no longer needs to care about the tile origin, because the CacheWrite control modifies the url if the CORS image loading is disabled and it is from a different origin. This only requires OpenLayers.ProxyHost to be properly configured. Also local storage keys use the original url instead of the proxied url, to make the CacheRead control work without proxy settings.
No deferred exceptions are thrown any more. Instead, OpenLayers.Console is used to show an error message for security exceptions.
We now check for OpenLayers.Tile.Image, because other tile types (e.g. UTFGrid) are not supported (yet).
To make the same origin handling in the CacheWrite control easier, OpenLayers.Request now exposes the same origin logic from request.issue as a separate function, so it can also be used by other components.
The UTFGrid layer's `getTileInfo` method was not correctly handling dateline wrapping (and was a bit more complicated than it needed to be). Since it would be useful to all grid layers to be able to retrieve a tile and pixel offset for any map location, this functionality deserves to be on the Grid layer.
The WMTS layer currently exposes a `getTileInfo` method that is used within the layer and by the WMTSGetFeatureInfo control. This method could be renamed to `getRemoteTileInfo` or something to differentiate it from a method that gets locally cached tile info. Until that change is made, the method on the Grid layer will be called `getGridData`.
