Added comments

app/src/dummy/java/eu/faircode/email/SSLHelper.java

@@ -10,6 +10,7 @@ public class SSLHelper {
                                             boolean secure, boolean cert_strict,
                                             String trustedFingerprint,
                                             ITrust intf) {
+        // https://support.google.com/faqs/answer/6346016
         return null;
     }
 

app/src/main/java/eu/faircode/email/ConnectionHelper.java

@@ -720,6 +720,7 @@ public class ConnectionHelper {
     }
 
     static HttpURLConnection openConnectionUnsafe(Context context, URL url, int ctimeout, int rtimeout) throws IOException {
+        // https://support.google.com/faqs/answer/7188426
         SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
         boolean open_safe = prefs.getBoolean("open_safe", false);