No way to re-select a generated avatar if a custom avatar has been selected

[typeless]

• Gitea version (or commit ref):
  Gitea Version: 1.1.0+307-gad70af1

• Git version:
  2.7.4

• Operating system:
  Ubuntu 16.04

• Database (use [x]):

  • PostgreSQL
  • MySQL
  • MSSQL
  • SQLite

• Can you reproduce the bug at https://try.gitea.io:

  • Yes (provide example URL)
  • No
  • Not relevant

Description

If the user has selected a custom avatar, he can not 'opt-out' to use a generated avatar anymore.
...

[daviian]

@typeless @lunny Fixed with PR #3988