Add missing image.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@9733 20353a03-c40f-0410-a6d1-a30d3c3de9de

bt5/erp5_web/SkinTemplateItem/portal_skins/erp5_web_default_theme/erp5-website-external-link.png.xml

+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <tuple>
+        <tuple>
+          <string>OFS.Image</string>
+          <string>Image</string>
+        </tuple>
+        <none/>
+      </tuple>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>__ac_local_roles__</string> </key>
+            <value>
+              <none/>
+            </value>
+        </item>
+        <item>
+            <key> <string>__name__</string> </key>
+            <value> <string>erp5-website-external-link.png</string> </value>
+        </item>
+        <item>
+            <key> <string>content_type</string> </key>
+            <value> <string>image/png</string> </value>
+        </item>
+        <item>
+            <key> <string>data</string> </key>
+            <value> <string encoding="base64">iVBORw0KGgoAAAANSUhEUgAAAAoAAAAJAgMAAAEBz2UWAAAADFBMVEXuCgi2w+Xq7vhjfcGkcHCV
+AAAAAXRSTlMAQObYZgAAAAd0SU1FB9YHCQ4aOFUqqUcAAAA9SURBVAjXYzBgOMDAAMQXGAwYHBg+
+MLxwYLjOwMB8gGH1AYY5DAw7GBj+MDD8Z/zA8DTHgOHpAwaGV2sYAJX1ESqPz7ipAAAAAElFTkSu
+QmCC</string> </value>
+        </item>
+        <item>
+            <key> <string>height</string> </key>
+            <value> <int>9</int> </value>
+        </item>
+        <item>
+            <key> <string>precondition</string> </key>
+            <value> <string></string> </value>
+        </item>
+        <item>
+            <key> <string>size</string> </key>
+            <value> <int>174</int> </value>
+        </item>
+        <item>
+            <key> <string>title</string> </key>
+            <value> <string></string> </value>
+        </item>
+        <item>
+            <key> <string>width</string> </key>
+            <value> <int>10</int> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>