Merge pull request #7663 from antobinary/locales-21

bigbluebutton-html5/private/locales/de.json

bigbluebutton-html5/private/locales/fa_IR.json

bigbluebutton-html5/private/locales/hu_HU.json

bigbluebutton-html5/private/locales/km.json

bigbluebutton-html5/private/locales/pt_BR.json

bigbluebutton-html5/private/locales/ru_RU.json

bigbluebutton-html5/private/locales/sv_SE.json

bigbluebutton-html5/private/locales/zh_CN.json

bigbluebutton-html5/private/locales/zh_TW.json