Broken CSS/JS for User Access requests

[palkerecsenyi]

When viewing a user access request, the UI looks broken. Some CSS is incorrect (missing margins, etc), and the user avatars are missing. Additionally, the self_html link for request events doesn't contain the #commentevent-... suffix which could be a backend problem.

The frontend issues are probably related to the user access request Jinja template looking very different to the other request types. Maybe there is an opportunity for refactoring here to reduce the amount of code duplication between the request types? However, if this refactoring is too complicated, the priority should be fixing this issue as quickly as possible.