ProjectExplorer: Make ProjectExplorerSettingsPage build again

Change-Id: Ic407ee1d29ec83ace610b852a05f1bfc7402513a
Reviewed-by: Marco Bubke <marco.bubke@theqtcompany.com>

src/plugins/projectexplorer/projectexplorersettingspage.ui

@@ -10,19 +10,13 @@
     <height>507</height>
    </rect>
   </property>
-  <layout class="QVBoxLayout" name="verticalLayout_3">
+  <layout class="QVBoxLayout" name="verticalLayout_2">
    <item>
     <widget class="QGroupBox" name="directoryGroupBox">
      <property name="title">
       <string>Projects Directory</string>
      </property>
-     <layout class="QFormLayout" name="formLayout">
-      <property name="fieldGrowthPolicy">
-       <enum>QFormLayout::ExpandingFieldsGrow</enum>
-      </property>
-      <property name="labelAlignment">
-       <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
-      </property>
+     <layout class="QGridLayout" name="gridLayout_2">
       <item row="0" column="0" colspan="2">
        <widget class="QRadioButton" name="currentDirectoryRadioButton">
         <property name="text">