Change icon and add dropdown on mobile for language change

[srujner]

Description

It's the follow task from the comments from #332
Icon Proposal: https://pictogrammers.com/library/mdi/icon/translate/

Checklist

• Does it need UI/UX design?
  • Yes. Describe the UI/UX requirements or attach a Figma link in the "Design" section.
  • No
• Does it need API design?
  • Yes. Specify the endpoints, methods, or data structures needed.
  • No
• Does it need design around state flow?
  • Yes. Outline the state flow requirements.
  • No
• Does it need a test plan?
  • Yes. Add the test plan as a comment in this task or attach the document.
  • No

---

User Stories

• As a [user type],
  I want [functionality],
  so that [benefit].

---

Design

• Figma: [Insert URL]
• Design Docs: [Insert URL]

---

[garethbowen]

New look...

Desktop:

Mobile: