slapos_web: enable search of computer by title and reference in my_servers list page

master/bt5/slapos_web/SkinTemplateItem/portal_skins/vifib_hosting/WebSection_viewMyServersRender/listbox.xml

@@ -15,6 +15,7 @@
                 <string>list_method</string>
                 <string>portal_types</string>
                 <string>search</string>
+                <string>search_columns</string>
                 <string>select</string>
                 <string>selection_name</string>
                 <string>title</string>
@@ -151,7 +152,22 @@
                 </item>
                 <item>
                     <key> <string>search</string> </key>
-                    <value> <int>0</int> </value>
+                    <value> <int>1</int> </value>
+                </item>
+                <item>
+                    <key> <string>search_columns</string> </key>
+                    <value>
+                      <list>
+                        <tuple>
+                          <string>title</string>
+                          <string>Title</string>
+                        </tuple>
+                        <tuple>
+                          <string>reference</string>
+                          <string>Reference</string>
+                        </tuple>
+                      </list>
+                    </value>
                 </item>
                 <item>
                     <key> <string>select</string> </key>