Remove commit hash from repository table

[lafriks]

I would like to propose to remove commit hash from repository table list and make commit message as link to commit like it is in GitHub and GitLab. It makes UI a lot cleaner.

Before

After

[sapk]

If someone do that, He could you add the GPG check of the last commit like https://github.com/go-gitea/gitea/blob/master/templates/repo/commits_table.tmpl#L49. I was fearing that it will add some overload here, when doing PR, but with one commit to check this could be safe..