Permissions levels are not clear when adding namespaces
The GitLab for Jira Cloud app can only link groups. It works for top-level or subgroups. It does not work for projects or personal namespases.
### Problem
When wanting to link a group (or subgroup) in the GitLab for Jira Cloud app, one must have `Owner` or `Maintainer` role for a group.
The term "namespace" is confusing and should be changed to "group".
| Current error state |
| ------ |
|  |
Feedback:
- https://www.reddit.com/r/gitlab/comments/nf7qj3/cant_see_gitlab_namespaces_from_within_gitlab_for/
### Proposal
1. Remove the term "namespace" and only use the term "groups".
2. Describe which roles are needed in order to see a namespace.
| Has permission | NO permission |
| ------ | ------ |
|  |  |
#### Copy
>**Link groups**
>
>Search...
>**No groups found**
>
>Only groups you have at least the Maintainer role for appear here.
See comment: https://gitlab.com/gitlab-org/gitlab/-/issues/225803/designs/Connect-app-MVC1-01.png#note_583625114
> **Not seeing your Groups?**
> <br>Make sure you have "Owner" or "Maintainer" permissions set at that group level. (see [comment](https://gitlab.com/gitlab-org/gitlab/-/issues/331432#note_1400833977)).
issue