[IceProxyFinder widget] Add method to allow setting a default proxy name
Scope: IceProxyFinder
widget in libraries/ArmarXGuiBase/widgets
.
Change summary: Added a method to have an API to set a default proxy name for when the widget is initialised
Rationale: The IceProxyFinder
widget lacked a method to set a default proxy name. This, however, is especially useful if one does not use a default image provider name and the UI state is saved / reloaded. Without the added setter, one has to enter the proxy name each time after reloading the UI.