[views] safety belt around page argument handling (if not an int)

views.py

@@ -118,8 +118,11 @@
             if key == 'children_for':
                 children_for = value
             if key == 'page':
-                start = (max(int(value) - 1, 0)) * 10
-                stop = start + 10
+                try:
+                    start = (max(int(value) - 1, 0)) * 10
+                    stop = start + 10
+                except ValueError:
+                    pass
         search = self.customize_search(query_string,
                                        facet_selections,
                                        start, stop,