preferencesdialog:fix spacer to expanding

app/settings/settingsdialog/settingsdialog.ui

@@ -29,7 +29,7 @@
    <item>
     <widget class="QTabWidget" name="tabWidget">
      <property name="currentIndex">
-      <number>0</number>
+      <number>1</number>
      </property>
      <widget class="QWidget" name="layoutsTab">
       <attribute name="title">
@@ -887,6 +887,12 @@ This tracker is used in order to not lose any screen related update.</string>
                    <verstretch>0</verstretch>
                   </sizepolicy>
                  </property>
+                 <property name="minimumSize">
+                  <size>
+                   <width>150</width>
+                   <height>0</height>
+                  </size>
+                 </property>
                  <property name="maximumSize">
                   <size>
                    <width>150</width>
@@ -912,6 +918,12 @@ This tracker is used in order to not lose any screen related update.</string>
                    <verstretch>0</verstretch>
                   </sizepolicy>
                  </property>
+                 <property name="minimumSize">
+                  <size>
+                   <width>150</width>
+                   <height>0</height>
+                  </size>
+                 </property>
                  <property name="maximumSize">
                   <size>
                    <width>150</width>
@@ -937,6 +949,12 @@ This tracker is used in order to not lose any screen related update.</string>
                    <verstretch>0</verstretch>
                   </sizepolicy>
                  </property>
+                 <property name="minimumSize">
+                  <size>
+                   <width>150</width>
+                   <height>0</height>
+                  </size>
+                 </property>
                  <property name="maximumSize">
                   <size>
                    <width>150</width>
@@ -967,7 +985,7 @@ This tracker is used in order to not lose any screen related update.</string>
                   <enum>Qt::Horizontal</enum>
                  </property>
                  <property name="sizeType">
-                  <enum>QSizePolicy::Fixed</enum>
+                  <enum>QSizePolicy::Expanding</enum>
                  </property>
                  <property name="sizeHint" stdset="0">
                   <size>