Update more images

Try to reduce the quality lost in compression or resizing

doc/user/project/import/gemnasium.md

@@ -66,19 +66,19 @@ GitHub.com or GitHub Enterprise repository. This will automatically prompt
 GitLab CI/CD to run whenever code is pushed to GitHub and post CI/CD results
 back to both GitLab and GitHub when completed.
 
-1. Create a new project, and select the "CI/CD for external repo" tab:
+1. Create a new project, and select "CI/CD for external repo":
 
-   ![Create new Project](img/gemnasium/create_project.png)
+   ![Create new Project](img/gemnasium/create_project_v13_5.png)
 
 1. Use the "GitHub" button to connect your repositories.
 
-   ![Connect from GitHub](img/gemnasium/connect_github.png)
+   ![Connect from GitHub](img/gemnasium/connect_github_v13_5.png)
 
 1. Select the project(s) to be set up with GitLab CI/CD and chose "Connect".
 
-   ![Select projects](img/gemnasium/select_project.png)
+   ![Select projects](img/gemnasium/select_project_v13_5.png)
 
-   Once the configuration is done, you may click on your new
+   After the configuration is done, you may click on your new
    project on GitLab.
 
    ![click on connected project](img/gemnasium/project_connected.png)

doc/user/project/merge_requests/reviewing_and_managing_merge_requests.md

@@ -18,7 +18,7 @@ View all the merge requests within a project by navigating to **Project > Merge
 When you access your project's merge requests, GitLab will present them in a list,
 and you can use the tabs available to quickly filter by open and closed. You can also [search and filter the results](../../search/index.md#filtering-issue-and-merge-request-lists).
 
-![Project merge requests list view](img/project_merge_requests_list_view.png)
+![Project merge requests list view](img/project_merge_requests_list_view_v13_5.png)
 
 ## View merge requests for all projects in a group
 

doc/user/project/milestones/index.md

@@ -76,7 +76,7 @@ To create a **group milestone**:
 1. Enter the title, an optional description, an optional start date, and an optional due date.
 1. Click **New milestone**.
 
-![New group milestone](img/milestones_new_group_milestone.png)
+![New group milestone](img/milestones_new_group_milestone_v13_5.png)
 
 ## Editing milestones