* support for passing in white list pattern in cleaner script

@see http://www.filebot.net/forums/viewtopic.php?f=6&t=762#p5731

website/scripts/cleaner.groovy

@@ -5,6 +5,11 @@ def deleteRootFolder = tryQuietly{ root.toBoolean() }
  * Delete orphaned "clutter" files like nfo, jpg, etc and sample files
  */
 def isClutter(f) {
+	// white list
+	def ignore  = tryQuietly{ ignore }          ?: /extrathumbs/
+	if (f.path =~ "(?i)\\b($ignore)\\b") return false
+	
+	// black list
 	def exts    = tryQuietly{ exts }            ?: /jpg|jpeg|png|gif|nfo|xml|htm|html|log|srt|sub|idx|md5|sfv|txt|rtf|url|db|dna|log/
 	def terms   = tryQuietly{ terms }           ?: /sample|trailer|extras|deleted.scenes|music.video|scrapbook/
 	def maxsize = tryQuietly{ maxsize as Long } ?: 100 * 1024 * 1024