l10n: updated ar Arabic
l10n: updated ar Arabic

localizers: Ramy Raoof, Kushal Das

https://github.com/freedomofpress/securedrop-i18n
copied from acf2dfea89d3e2c7d74a1f240a8a038a39f547e7

ehartsuyker/securedrop,conorsch/securedrop,heartsucker/securedrop,ehartsuyker/securedrop,ehartsuyker/securedrop,ehartsuyker/securedrop,ehartsuyker/securedrop,heartsucker/securedrop,heartsucker/securedrop,ehartsuyker/securedrop,heartsucker/securedrop,conorsch/securedrop,conorsch/securedrop,conorsch/securedrop,conorsch/securedrop,heartsucker/securedrop