small changes

tests/http_validator.py

@@ -715,7 +715,7 @@ def rate_csp(result_dict, _, _local, org_domain, org_www_domain, domain, create_
 
                 text_recommendation = ['##### Want to improve your Content-Security-Policy game?\r\n',
                                 'Why not try the below Content-Security-Policy response header to get started using Content Security Policy?\r\n',
-                                'Remember, below recommendation is only based on a sample (read: {0} page) of all pages on your website\r\n'.format(nof_pages),
+                                'Remember, below recommendation is only based on a sample (read: {0} page(s)) of all pages on your website\r\n'.format(nof_pages),
                                 'and based without clicking on anything.\r\n',
                                 '\r\n',
                                 'Recommended Content-Security-Policy policies:\r\n',

tests/utils.py

@@ -232,9 +232,11 @@ def httpRequestGetContent(url, allow_redirects=False, use_text_instead_of_conten
 def get_content_type(url, cache_time_delta):
     headers = get_url_headers(url, cache_time_delta)
 
-    has_content_type_header = 'Content-Type' in headers
-    if has_content_type_header:
+    if 'Content-Type' in headers:
         return headers['Content-Type']
+    if 'content-type' in headers:
+        return headers['content-type']
+
     return None
 
 def get_url_headers(url, cache_time_delta):