[FIX] Website pager - Be sure that page in get param is a digit else use page 1.

Need to find which controller add ?page= instead of &page= because google find some url with '?page=1?page=2' --> page = '1?page=2'. According to google, the referrer is the old website.

addons/website/models/website.py

@@ -250,7 +250,7 @@ class website(osv.osv):
         # Compute Pager
         page_count = int(math.ceil(float(total) / step))
 
-        page = max(1, min(int(page), page_count))
+        page = max(1, min(int(page if page.isdigit() else 1), page_count))
         scope -= 1
 
         pmin = max(page - int(math.floor(scope/2)), 1)