Signed-off-by: NRémy Coutable <remy@rymai.me>

Remove superfluous lib: true, type: redis, service: true, models: true, services: true, no_db: true, api: true
Signed-off-by: NRémy Coutable <remy@rymai.me>

- Ignore JS fixtures
- Ignore qa directory
- Rewrite concern specs to put concern name first

Notice what happens when a user adds a key with a space in between:

```
irb(main):004:0> 'ssh-rsa  foobar'.split(/ /)
=> ["ssh-rsa", "", "foobar"]
```

This would cause gitlab-shell to receive a blank argument for the actual
key, leading to users unable to login.

Call ensure_secret_token! in secret token test's before block since it would be called in an initializer.

Avoid issues with text encoding by not sending out non-7-bit ASCII
text.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/22167

gitlab-shell expects only one tab separator per key, and an SSH key with
a tab character in the comment, for example, would break things.

Closes #2970

Signed-off-by: NJeroen van Baarsen <jeroenvanbaarsen@gmail.com>