Fixes: Do not display f1, f2 while waiting for wizard extension page data

src/plugins/projectexplorer/projectwizardpage.ui

@@ -104,8 +104,9 @@
         <widget class="QLabel" name="filesLabel">
          <property name="text">
           <string>The following files will be added:
-f1
-f2
+
+
+
 </string>
          </property>
          <property name="textInteractionFlags">