Activate/deactivate click control
Fix #385
Merge pull request #387 from camptocamp/streetview-click

Activate/deactivate click control on StreetView plugin.
Fix display background layers
Don't zoom on layers add
Fix #393
Code style and doc
Correct layer index
Fix #392
Better external WMS layer name
Merge pull request #396 from camptocamp/fix-wmsbrowser

Fix wmsbrowser
Make sure requested basemap exists before activating it
Merge pull request #409 from camptocamp/basemap-check

Make sure requested basemap exists before activating it
Merge branch '1.3'

Conflicts:
	core/src/script/CGXP/plugins/WMSBrowser.js