Improvements:
- Upgrade MatrixKit version (v0.9.1).
- Replace the deprecated MXMediaManager and MXMediaLoader interfaces use (see matrix-org/matrix-ios-sdk/pull/593).
- Replace the deprecated MXKAttachment and MXKImageView interfaces use (see matrix-org/matrix-ios-kit/pull/487).
- i18n: Enable Japanese (ja)
- i18n: Enable Hungarian (hu)
Bug fix:
- Registration: reCAPTCHA does not work anymore on iOS 10 (#2119).