improve https rewrite code

searx/https_rewrite.py

@@ -137,3 +137,5 @@ def load_https_rules(rules_path):
 
         # append ruleset
         https_rules.append(ruleset)
+        
+    print(' * {n} https-rules loaded'.format(n=len(https_rules)))

searx/webapp.py

@@ -224,10 +224,14 @@ def index():
 
                     # process rules
                     for rule in rules:
+                        try:
                             # TODO, precompile rule
                             p = re.compile(rule[0])
+                            
                             # rewrite url if possible
                             new_result_url = p.sub(rule[1], result['url'])
+                        except:
+                            break
 
                         # parse new url
                         new_parsed_url = urlparse(new_result_url)