Update "Create a new branch from an issue" section to reflect latest UI

Update docs and screenshot

doc/user/project/merge_requests/creating_merge_requests.md

@@ -31,6 +31,8 @@ also appear in the top right of the:
 In this case, the merge request will use the most recent branch you pushed changes
 to as the source branch, and `master` in the current project as the target.
 
+You can also [create a new merge request directly from an issue](../repository/web_editor.md#create-a-new-branch-from-an-issue).
+
 ## Workflow for new merge requests
 
 On the **New Merge Request** page, you can start by filling in the title and description

doc/user/project/repository/web_editor.md

@@ -95,20 +95,31 @@ There are multiple ways to create a branch from GitLab's web interface.
 
 In case your development workflow dictates to have an issue for every merge
 request, you can quickly create a branch right on the issue page which will be
-tied with the issue itself. You can see a **New branch** button after the issue
-description, unless there is already a branch with the same name or a referenced
-merge request.
+tied with the issue itself. You can see a **Create merge request** dropdown
+below the issue description unless there is already a branch with the same
+name or a referenced merge request.
 
-![New Branch Button](img/web_editor_new_branch_from_issue.png)
+![Create Button](img/web_editor_new_branch_from_issue_create_button_v12_6.png)
 
-Once you click it, a new branch will be created that diverges from the default
+This dropdown contains the options **Create merge request and branch** and **Create branch**.
+
+![New Branch Button](img/web_editor_new_branch_from_issue_v_12_6.png)
+
+Once you choose one of these options, a new branch or branch and merge request
+will be created, based on the default
 branch of your project, by default `master`. The branch name will be based on
 the title of the issue and as a prefix, it will have its internal ID. Thus, the example
-screenshot above will yield a branch named
-`23177-add-support-for-rich-references-to-referables`.
-
-Since GitLab 9.0, when you click the `New branch` in an empty repository project, GitLab automatically creates the master branch, commits a blank `README.md` file to it and creates and redirects you to a new branch based on the issue title.
-If your [project is already configured with a deployment service][project-services-doc] (e.g. Kubernetes), GitLab takes one step further and prompts you to set up [auto deploy][auto-deploy-doc] by helping you create a `.gitlab-ci.yml` file.
+screenshot above will create a branch named
+`2-make-static-site-auto-deploy-and-serve`.
+
+When you click the **Create branch** button in an empty
+repository project, GitLab automatically creates a `master` branch, commits
+a blank `README.md` file to it, and creates and redirects you to a new branch
+based on the issue title.
+If your [project is already configured with a deployment service](../integrations/project_services.md),
+such as Kubernetes, GitLab takes one step further and prompts you to set up
+[auto deploy](../../../topics/autodevops/index.md#auto-deploy)
+by helping you create a `.gitlab-ci.yml` file.
 
 After the branch is created, you can edit files in the repository to fix
 the issue. When a merge request is created based on the newly created branch,
@@ -116,9 +127,6 @@ the description field will automatically display the [issue closing pattern](../
 `Closes #ID`, where `ID` the ID of the issue. This will close the issue once the
 merge request is merged.
 
-[project-services-doc]: ../integrations/project_services.md
-[auto-deploy-doc]: ../../../topics/autodevops/index.md#auto-deploy
-
 ### Create a new branch from a project's dashboard
 
 If you want to make changes to several files before creating a new merge