🔧 [Refactor] Change Invite Code Button and Menu to `Copy Invite Link`

Created by: Tirokk

🔧 Refactor ticket

Change invite code button:

• add a tooltip like on the group or map button: Invite your friends
• in the opened menu:
  • change the text to: Copy Invite Link
    • leave the code away, because it's not interesting for anybody
  • center the button
• change the short description above to:

Send this link per e-mail or in social media to invite your friends: