added hint: how to add own proxy (#10)

source/ArmarXGui/gui-plugins/StatechartEditorPlugin/view/dialogs/EditStatechartGroupDialog.ui

@@ -147,7 +147,10 @@
           </font>
          </property>
          <property name="text">
-          <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Selected proxies will be available in all states via get&lt;span style=&quot; font-style:italic;&quot;&gt;ProxyNameHere&lt;/span&gt;(). &lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+          <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Selected proxies will be available in all states via get&lt;span style=&quot; font-style:italic;&quot;&gt;ProxyNameHere&lt;/span&gt;(). &lt;a href=&quot;http://armarx.humanoids.kit.edu/ArmarXGui-HowTos-Add-Proxy-To-StatechartContext.html&quot;&gt;&lt;span style=&quot; text-decoration: underline; color:#0000ff;&quot;&gt;Missing your Proxy?&lt;/span&gt;&lt;/a&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+         </property>
+         <property name="openExternalLinks">
+          <bool>true</bool>
          </property>
         </widget>
        </item>