erp5_oauth_facebook_login: Use unrestrictedSearchResults to avoid security_uid (Speed up)

When a script with manager proxy role is called from anonymous context, it include a HUGE list of security_uids, use unrestrictedSearchResults skips the unecessary usage of security_uids on catalog.

bt5/erp5_oauth_facebook_login/ExtensionTemplateItem/portal_components/extension.erp5.FacebookLoginUtility.py

@@ -37,5 +37,12 @@ def getAccessTokenFromCode(self, code, redirect_uri):
     code=code, redirect_uri=redirect_uri,
     app_id=client_id, app_secret=secret_key)
 
+def unrestrictedSearchFacebookConnector(self):
+  return self.getPortalObject().portal_catalog.unrestrictedSearchResults(
+            portal_type="Facebook Connector",
+            reference="default",
+            validation_state="validated",
+            limit=2)
+
 def getUserEntry(token):
   return getFacebookUserEntry(token)

bt5/erp5_oauth_facebook_login/SkinTemplateItem/portal_skins/erp5_oauth_facebook_login/ERP5Site_getFacebookConnector.xml

+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="ExternalMethod" module="Products.ExternalMethod.ExternalMethod"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>_function</string> </key>
+            <value> <string>unrestrictedSearchFacebookConnector</string> </value>
+        </item>
+        <item>
+            <key> <string>_module</string> </key>
+            <value> <string>FacebookLoginUtility</string> </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>ERP5Site_getFacebookConnector</string> </value>
+        </item>
+        <item>
+            <key> <string>title</string> </key>
+            <value> <string></string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>

bt5/erp5_oauth_facebook_login/SkinTemplateItem/portal_skins/erp5_oauth_facebook_login/FacebookConnector_view.xml

@@ -115,7 +115,7 @@
         </item>
         <item>
             <key> <string>title</string> </key>
-            <value> <string>Faceook Connector</string> </value>
+            <value> <string>Facebook Connector</string> </value>
         </item>
         <item>
             <key> <string>unicode_mode</string> </key>