merge r2789 from branch 2.0:

- some german language changes
- added option for smarty $conf['template_compile_check'] - default true; if false smarty doesn't check if templates need recompilation resulting in less disk accesses (good when the disk is not local)
- load_language doesnt check first for en_uk.utf-8 directory ...

git-svn-id: http://piwigo.org/svn/trunk@2790 68402e56-0260-453c-a942-63ccdbb3a9ee

include/template.class.php

@@ -55,6 +55,7 @@ class Template {
 
     $this->smarty = new Smarty;
     $this->smarty->debugging = $conf['debug_template'];
+    $this->smarty->compile_check=$conf['template_compile_check'];
 
     $compile_dir = $conf['local_data_dir'].'/templates_c';
     mkgetdir( $compile_dir );
@@ -205,7 +206,7 @@ class Template {
     }
     return true;
   }
-  
+
   /** return template extension if exists  */
   function get_extent($filename='', $handle='')
   {