- is_homepage not set for flat view/calendar modes

- added require jquery for some footer_script
- removed unused/unnecesary css (hope I'm done for now)
- if page[start] is greater than number of items than page not found (google+bing bots automatically detect patterns and increment start parameter)

git-svn-id: http://piwigo.org/svn/trunk@13872 68402e56-0260-453c-a942-63ccdbb3a9ee

include/section_init.inc.php

@@ -288,6 +288,7 @@ SELECT id
       }
       else
       {
+        unset($page['is_homepage']);
         $where_sql = '1=1';
       }
     }
@@ -545,6 +546,7 @@ SELECT DISTINCT(id)
 
 if (isset($page['chronology_field']))
 {
+  unset($page['is_homepage']);
   include_once( PHPWG_ROOT_PATH.'include/functions_calendar.inc.php' );
   initialize_calendar();
 }