GUI/Intro: Move prune setting below explanation

Author: luke-jr

src/qt/forms/intro.ui

@@ -200,6 +200,36 @@
      </item>
     </layout>
    </item>
+   <item>
+    <widget class="QLabel" name="lblExplanation1">
+     <property name="text">
+      <string>When you click OK, %1 will begin to download and process the full %4 block chain (%2GB) starting with the earliest transactions in %3 when %4 initially launched.</string>
+     </property>
+     <property name="wordWrap">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QLabel" name="lblExplanation2">
+     <property name="text">
+      <string>This initial synchronisation is very demanding, and may expose hardware problems with your computer that had previously gone unnoticed. Each time you run %1, it will continue downloading where it left off.</string>
+     </property>
+     <property name="wordWrap">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QLabel" name="lblExplanation3">
+     <property name="text">
+      <string>If you have chosen to limit block chain storage (pruning), the historical data must still be downloaded and processed, but will be deleted afterward to keep your disk usage low.</string>
+     </property>
+     <property name="wordWrap">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
    <item>
     <layout class="QHBoxLayout" name="pruneOptLayout">
      <item>
@@ -241,36 +271,6 @@
      </item>
     </layout>
    </item>
-   <item>
-    <widget class="QLabel" name="lblExplanation1">
-     <property name="text">
-      <string>When you click OK, %1 will begin to download and process the full %4 block chain (%2GB) starting with the earliest transactions in %3 when %4 initially launched.</string>
-     </property>
-     <property name="wordWrap">
-      <bool>true</bool>
-     </property>
-    </widget>
-   </item>
-   <item>
-    <widget class="QLabel" name="lblExplanation2">
-     <property name="text">
-      <string>This initial synchronisation is very demanding, and may expose hardware problems with your computer that had previously gone unnoticed. Each time you run %1, it will continue downloading where it left off.</string>
-     </property>
-     <property name="wordWrap">
-      <bool>true</bool>
-     </property>
-    </widget>
-   </item>
-   <item>
-    <widget class="QLabel" name="lblExplanation3">
-     <property name="text">
-      <string>If you have chosen to limit block chain storage (pruning), the historical data must still be downloaded and processed, but will be deleted afterward to keep your disk usage low.</string>
-     </property>
-     <property name="wordWrap">
-      <bool>true</bool>
-     </property>
-    </widget>
-   </item>
    <item>
     <spacer name="verticalSpacer">
      <property name="orientation">