Enabled all site except user guides to be multilingual ready

_config.yml

_i18n/en/downloads.md

_i18n/en/get-started/accepting.md

_i18n/en/get-started/contributing.md

_i18n/en/get-started/faq.md

_i18n/en/get-started/mining.md

_i18n/en/get-started/using.md

_i18n/en/get-started/what-is-monero.md

_i18n/en/press-kit.md

_i18n/en/resources/about.md

_i18n/en/resources/developer-guides.md

_i18n/en/resources/developer-guides/daemon-rpc.md

_i18n/en/resources/developer-guides/wallet-rpc.md

_i18n/en/resources/moneropedia/00-base-00

_i18n/en/resources/moneropedia/account.md

_i18n/en/resources/moneropedia/address-book.md

_i18n/en/resources/moneropedia/address.md

_i18n/en/resources/moneropedia/airgap.md

_i18n/en/resources/moneropedia/base32-address.md

_i18n/en/resources/moneropedia/base64-address.md