Always overwrite static files.

Just in case they have been updated.

gitstats

 
 		# copy static files if they do not exist
 		for file in ('gitstats.css', 'sortable.js', 'arrow-up.gif', 'arrow-down.gif', 'arrow-none.gif'):
-			if not os.path.exists(path + '/' + file):
-				basedir = os.path.dirname(os.path.abspath(__file__))
-				shutil.copyfile(basedir + '/' + file, path + '/' + file)
+			basedir = os.path.dirname(os.path.abspath(__file__))
+			shutil.copyfile(basedir + '/' + file, path + '/' + file)
 
 		f = open(path + "/index.html", 'w')
 		format = '%Y-%m-%d %H:%m:%S'