merge r1228 from branch-1_6 into trunk

bug 345: cannot browse categories (Club Internet modified web server provides 
PATH_INFO even if it is empty)

fix 339: also added in create_listing_file.php

git-svn-id: http://piwigo.org/svn/trunk@1229 68402e56-0260-453c-a942-63ccdbb3a9ee

include/section_init.inc.php

@@ -53,7 +53,7 @@
 
 $page['section'] = 'categories';
 
-if ( isset($_SERVER["PATH_INFO"]) )
+if ( isset($_SERVER["PATH_INFO"]) and !empty($_SERVER["PATH_INFO"]) )
 {
   $rewritten = $_SERVER["PATH_INFO"];
   $rewritten = str_replace('//', '/', $rewritten);

tools/create_listing_file.php

@@ -165,7 +165,15 @@ function get_sync_iptc_data($file)
     $iptc['keywords'] = preg_replace('/[.;]/', ',', $iptc['keywords']);
     $iptc['keywords'] = preg_replace('/^,+|,+$/', '', $iptc['keywords']);
   }
-
+  $iptc['keywords'] = implode(
+  	       ',',
+  	       array_unique(
+  	         explode(
+  	           ',',
+  	           $iptc['keywords']
+  	           )
+  	         )
+  	       );
   return $iptc;
 }