Translated, linked & polished

- README translated into german
- Added some spaces in the README
- Linked the READMEs together, except ko-KR
- Changed "Inglese" to "English" in it-IT
- Removed link to zh-CN in zh-CN
- Added flags in the READMEs, except for ko-KR

README.ru-RU.md

@@ -21,7 +21,7 @@
 
 <br/>
 <p align="center">
-Этот README также доступен на: <a href="./README.md">English</a> <a href="./README.ko-KR.md">한국어</a> <a href="./README.zh-CN.md">简体中文</a> <a href="./README.it-IT.md">Italiano</a>
+Этот README также доступен на: <a  href="./README.md">:gb: English</a> <a  href="./README.ko-KR.md">:kr: 한국어</a>  <a  href="./README.zh-CN.md">:cn: 简体中文</a> <a  href="./README.it-IT.md">:it: Italiano</a> <a href="./README.de-DE.md">:de: Deutsch</a>
 </p>
 
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