Merge branch '18310-improve-request-access-button' into 'master'

Improve the request / withdraw access button

It implements the design proposed in #18310.

No.

To close #18310.

Closes #18310.

| Medium | Large |
| ----------- | ------- |
| ![request_access_button](/uploads/a1de370dcbb8ac9a63d2df5c68591db7/request_access_button.png) | ![request_access_button-large](/uploads/0a1c70380268e620a6ca4d3e1661d58c/request_access_button-large.png) |

| Medium | Large |
| ----------- | ------- |
| ![withdraw_access_request_button](/uploads/c9df39d04b61566ec143d5e9cc43ada2/withdraw_access_request_button.png) | ![withdraw_access_request_button-large](/uploads/10fdaa94d72956e06bdb995e65b51472/withdraw_access_request_button-large.png) |

| Medium | Large |
| ----------- | ------- |
| ![request_access_button](/uploads/8e71395041a5cea996a35df2083bb723/request_access_button.png) | ![project-request_access_button-large](/uploads/adb2dec0eccec8e5171dc0e26e6b03a6/project-request_access_button-large.png) |

| Medium | Large |
| ----------- | ------- |
| ![withdraw_access_request_button](/uploads/12be06f0a2bf9426a5e043f52c4d1dab/withdraw_access_request_button.png) | ![project-withdraw_access_request_button-large](/uploads/93fda7767ee5f02186c4c954ea346254/project-withdraw_access_request_button-large.png) |

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [x] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- Tests
  - [x] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !4860
(cherry picked from commit c578fb064c6a90cbaf60959d7706c0bcc34d87f5)

5 files changed, 1 insertions, 1 deletions

diff --git a/doc/workflow/add-user/img/access_requests_management.png b/doc/workflow/add-user/img/access_requests_management.png
index e9641cb4f85..5c9b510ba9d 100644
--- a/doc/workflow/add-user/img/access_requests_management.png
+++ b/doc/workflow/add-user/img/access_requests_management.png
diff --git a/doc/workflow/groups.md b/doc/workflow/groups.md
index 1a316e80976..9b50286b179 100644
--- a/doc/workflow/groups.md
+++ b/doc/workflow/groups.md
@@ -51,7 +51,7 @@ If necessary, you can increase the access level of an individual user for a spec
 
 ![Barry effectively has 'Master' access to GitLab CI now](groups/override_access_level.png)
 
-## Request access to a group
+## Requesting access to a group
 
 As a user, you can request to be a member of a group. Go to the group you'd
 like to be a member of, and click the **Request Access** button on the right
diff --git a/doc/workflow/groups/access_requests_management.png b/doc/workflow/groups/access_requests_management.png
index ffede8e9bd6..5202434f00f 100644
--- a/doc/workflow/groups/access_requests_management.png
+++ b/doc/workflow/groups/access_requests_management.png
diff --git a/doc/workflow/groups/request_access_button.png b/doc/workflow/groups/request_access_button.png
index ff0ac8747a7..0eec5cb937d 100644
--- a/doc/workflow/groups/request_access_button.png
+++ b/doc/workflow/groups/request_access_button.png
diff --git a/doc/workflow/groups/withdraw_access_request_button.png b/doc/workflow/groups/withdraw_access_request_button.png
index 99d7a326ed8..b7de830a780 100644
--- a/doc/workflow/groups/withdraw_access_request_button.png
+++ b/doc/workflow/groups/withdraw_access_request_button.png