Unable to edit or delete tag as admin

## Describe the bug

Just started playing around with Answer, and as an Admin user created a tag, which I cannot subsequently modify or delete. Wondering if this is a defect, or I am doing something wrong:


### To Reproduce

Steps to reproduce the behavior:

1. Go to tags
2. Create a new tag
3. Navigate to tags screen and select a tag (or select previously existing tag)
4. No options appear to be available to delete/edit the tag even if logged in as admin user.

### Expected behavior

The options to modify/delete tag should be shown:


### Platform

- Device: Desktop
- OS: MacOS, running inside Docker
- Browser and version: Firefox/Safari, latest
- Version: 1.4.2

Start at the Tags screen and reproduce the issue using an administrator account: create a tag, reopen it, and check whether edit and delete actions are rendered. Trace the tag-management and administrator-permission entry points from that screen; done means administrators can see and use both actions for existing tags, with the behavior covered by the relevant tests.

Written by the indexing model from the issue text.