Enable restoring the default names of project configuration items

* Enable support for this in all ProjectConfiguration items
   (Targets, projects, BCs, DCs, RCs, etc.). This is nicer
   than having custom code in individual configuraiton items.

Reviewed-by: dt

src/plugins/genericprojectmanager/genericbuildconfiguration.cpp

@@ -52,7 +52,6 @@ const char * const BUILD_DIRECTORY_KEY("GenericProjectManager.GenericBuildConfig
 GenericBuildConfiguration::GenericBuildConfiguration(GenericTarget *parent)
     : BuildConfiguration(parent, QLatin1String(GENERIC_BC_ID))
 {
-
 }
 
 GenericBuildConfiguration::GenericBuildConfiguration(GenericTarget *parent, const QString &id)