[netinstall] Display package descriptions

- For packages with a description, show that
- Add an example in the config-file

src/modules/netinstall/PackageTreeItem.cpp

@@ -130,30 +130,19 @@ PackageTreeItem::row() const
 
 QVariant
 PackageTreeItem::data( int column ) const
-{
-    if ( isPackage() )  // packages have a packagename, groups don't
 {
     switch ( column )
     {
     case 0:
-            return QVariant( packageName() );
+        // packages have a packagename, groups don't
-        default:
+        return QVariant( isPackage() ? packageName() : name() );
-            return QVariant();
-        }
-    }
-    else
-    {
-        switch ( column )  // group
-        {
-        case 0:
-            return QVariant( name() );
     case 1:
+        // packages often have a blank description
         return QVariant( description() );
     default:
         return QVariant();
     }
 }
-}
 
 PackageTreeItem*
 PackageTreeItem::parentItem()

src/modules/netinstall/netinstall.conf

@@ -255,7 +255,9 @@ groups:
         - konversation
         - nheko
         - quaternion
-    # Setting *selected* is supported.
+    # Setting *selected* is supported. Here we also show off "rich"
+    # packages: ones with a package-name (for the package-manager)
+    # and a description (for the human).
     - name: Editors
       description: "Editing"
       selected: false
@@ -263,6 +265,10 @@ groups:
         - vi
         - emacs
         - nano
+        - name: kate-git
+          description: Kate (unstable)
+        - name: kate
+          description: KDE's text editor
     # The "bare" package names can be intimidating, so you can use subgroups
     # to provide human-readable names while hiding the packages themselves.
     # This also allows you you group related packages -- suppose you feel