Integration with the nens layerswitcher.

The nens layer switcher is used for switching between
layers with nice ui elements integrated with Lizard.
Used Dutch strings for 'now'. Knock on wood.
Removed text from icons and use better icons.
Removed an empty event.
Removed popover css class because the tooltip didn't work out.
Merge pull request #26 from lizardsystem/roland-friendly2

Pull request for iPad friendly version