Already cached WMS information is not activated upon start of wms_control for default WMS server

[Joern Ungermann]

If WMS information had already been loaded, opening further WMS control windows in other views can reuse that information. If a WMS server is selected, the cache is accessed and the data is loaded.

Problem: When the Control is opened for the first time, the controls are not activated. First a different server has to be selected and the original has to be selcted again from the menu list for the cached information to be used.

[Reimar Bauer]

Activate WMS server if capabilities have already been loaded.

Fix issue #247

→ <<cset e5c638d3404b>>