We replace the usage of WikiPage::CreateService with the wiki_page factory in the specs.

Replaces all the explicit include metadata syntax in the specs (tag:
true) into the implicit one (:tag).
Added a cop to prevent future errors and handle autocorrection.

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

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

See https://gitlab.com/gitlab-org/gitlab-ce/issues/34698#note_34276286


for the thorough explanation.

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

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/33598

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

This partially reverts be25bbc4.

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

New Gitlab::UrlSanitizer.http_credentials_for_user method responsible
for generating a credentials hash from a user.

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

- Added method to check if the current Page version is the current latest version
- Conditionally checks for current version when showing Edit button
- Added feature specs for viewing project wiki page and expect edit button
- Added Changelog

https://gitlab.com/gitlab-org/gitlab-ce/issues/24007

Refers to #23806.

1. So we can build the markdown preview URL for it.

2. We can't skip the slug in this case, because the slug is used to
construct relative markdown URLs.

3. Add rspec feature tests to cover creating wiki pages with
   spaces/hyphens in the name.

4. Add rspec feature tests for markdown preview URL rewriting, which was
   only covered by unit tests up to this point.

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

Closes #15527.

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