Romanize style sheet names (see contao#7526)

Author: leofeyer

system/docs/CHANGELOG.md

@@ -4,6 +4,9 @@ Contao Open Source CMS changelog
 Version 3.2.17 (2015-01-XX)
 ---------------------------
 
+### Fixed
+Romanize style sheet names (see #7526).
+
 ### Fixed
 Add the username to the "account has been locked" log entry (see #7551).
 

system/modules/core/dca/tl_style_sheet.php

@@ -152,6 +152,10 @@
 			'search'                  => true,
 			'flag'                    => 1,
 			'eval'                    => array('mandatory'=>true, 'unique'=>true, 'rgxp'=>'alnum', 'maxlength'=>64, 'spaceToUnderscore'=>true),
+			'save_callback' => array
+			(
+				array('tl_style_sheet', 'romanizeName')
+			),
 			'sql'                     => "varchar(64) NOT NULL default ''"
 		),
 		'disablePie' => array
@@ -333,6 +337,17 @@ public function listStyleSheet($row)
 	}
 
 
+	/**
+	 * Romanize the file name (see #7526)
+	 * @param mixed
+	 * @return mixed
+	 */
+	public function romanizeName($varValue)
+	{
+		return utf8_romanize($varValue);
+	}
+
+
 	/**
 	 * Sanitize the conditional comments field
 	 * @param mixed