Implemented Mantis issue 156.
Code grooming.
Removed unecessary method: WebGIS.foldLayerCatalogue()
Showing plus/minus sign in TreeNodes - with side of plus sign appearing over the layer heap.
Merge branch 'co2'
Removed reference in stylesheets to minus icon image. It was being shown assortedly without being invoked.
Merge branch 'webgis'
More tweaks related to Mantis issue 156.
DSS layer using WFS 1.1.0 again.
Aditional check in MapInit.js
Pulled down update to WPSClient submodule.
Merge branch 'co2'
Resolves #181.
Merge branch 'webgis'