Temporarily disable certificate validation for Android

This is merely to allow users to log in and should be a temporary fix only.

src/UserSettingsPage.h

@@ -232,7 +232,14 @@ public:
         QString accessToken() const { return accessToken_; }
         QString deviceId() const { return deviceId_; }
         QString homeserver() const { return homeserver_; }
-        bool disableCertificateValidation() const { return disableCertificateValidation_; }
+        bool disableCertificateValidation() const
+        {
+#ifdef Q_OS_ANDROID
+                  return true;
+#else
+                  return disableCertificateValidation_;
+#endif
+        }
         QStringList hiddenTags() const { return hiddenTags_; }
         bool useIdenticon() const { return useIdenticon_ && JdenticonProvider::isAvailable(); }