[Feature] add full name in issue assignee

[qianlongzt]

• Gitea version (or commit ref): 1.4.0 rc-1
• Git version:
• Operating system:
• Database (use [x]):
  • PostgreSQL
  • MySQL
  • MSSQL
  • SQLite
• Can you reproduce the bug at https://try.gitea.io:
  • Yes (provide example URL)
  • No
  • Not relevant
• Log gist:

Description

if no full name , it's hard to know who are them in a big team.

Screenshots

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs during the next 2 weeks. Thank you for your contributions.

[lafriks]

Fixed in #6710

[adelowo]

@lafriks Shouldn't this be closed since it's fixed already ?