merge r6368,6410 from branch-2.1 to trunk

- merged the linkroot integration with the existing gallery_url (unique $conf['gallery_url'] used for RSS, mail homepage root in the browse path)
- added an option $conf['debug_mail'] - if set all outgoing mails are saved into local_data_dir

git-svn-id: http://piwigo.org/svn/trunk@6411 68402e56-0260-453c-a942-63ccdbb3a9ee

install/config.sql

@@ -10,7 +10,7 @@ INSERT INTO piwigo_config (param,value,comment) VALUES ('email_admin_on_comment_
 INSERT INTO piwigo_config (param,value,comment) VALUES ('email_admin_on_comment_deletion','false','Send an email to the administrators when a comment is deleted');
 INSERT INTO piwigo_config (param,value,comment) VALUES ('gallery_locked','false','Lock your gallery temporary for non admin users');
 INSERT INTO piwigo_config (param,value,comment) VALUES ('gallery_title','Piwigo demonstration site','Title at top of each page and for RSS feed');
-INSERT INTO piwigo_config (param,value,comment) VALUES ('gallery_url','http://piwigo.org/demo','URL given in RSS feed');
+INSERT INTO piwigo_config (param,value,comment) VALUES ('gallery_url','','Optional alternate homepage for the gallery');
 INSERT INTO piwigo_config (param,value,comment) VALUES ('rate','true','Rating pictures feature is enabled');
 INSERT INTO piwigo_config (param,value,comment) VALUES ('rate_anonymous','true','Rating pictures feature is also enabled for visitors');
 INSERT INTO piwigo_config (param,value,comment) VALUES ('page_banner','<h1>Piwigo demonstration site</h1><p>My photos web site</p>','html displayed on the top each page of your gallery');

install/upgrade_1.5.0.php

@@ -318,8 +318,8 @@ foreach ($queries as $query)
 //
 $params = array(
   'gallery_url' => array(
-    'http://piwigo.org/demo',
-    'URL given in RSS feed'
+    '',
+    'Optional alternate homepage for the gallery'
     ),
   'rate' => array(
     'true',