Merge pull request #58 from dve/master

Add viewparams to wms layer options
Add continuousWorld and noWrap to tiles layer options.
Merge pull request #60 from dve/master

Create layer from wellKnownText notation
Merge pull request #61 from Antea/feature/countinuousWorld

Add continuousWorld and noWrap to tiles layer options.
test case for nowrap attribute and for continuousWorld
fixed loading/load listeners for tile layers