Added in-app language translations:
1. English (en)
2. Chinese (zh) 中文
3. Spanish (es) Español
4. Hindi (hi)  हिन्दी
5. Arabic (ar) العربية (RTL)
6. Portuguese (pt) Português
7. French (fr) Français
8. Russian (ru) Русский
9. Japanese (ja) 日本語
10. German (de) Deutsch
11. Korean (ko) 한국어
12. Indonesian (id) Bahasa Indonesia
13. Vietnamese (vi) iếng việt
14. Turkish (tr) Türkçe
15. Italian (it) Italiano
16. Dutch (nl)Nederlands
- Minor improvements