Please fix issues reported by adapter checker

[mcm1957]

👀 [E145] Missing mandatory translation into de of some "common.news" in io-package.json.
👀 [W145] Missing suggested translation into ru,pt,nl,fr,it,es,pl,uk,zh-cn of some "common.news" in io-package.json.
👀 [W156] Adapter should support admin 5 UI (jsonConfig) if you do not use a React based UI
👀 [W184] "common.materialize" is deprecated for admin >= 5 at io-package.json. Please use property "adminUI".
👀 [W504] setInterval found in "main.js", but no clearInterval detected
👀 [W505] setTimeout found in "main.js", but no clearTimeout detected