Docs: Merge EE doc/user/project/issues to CE

doc/user/project/issues/create_new_issue.md

@@ -65,6 +65,26 @@ In GitLab 11.7, we updated the format of the generated email address.
 However the older format is still supported, allowing existing aliases
 or contacts to continue working._
+## New issue via Service Desk **[PREMIUM]**
+
+Enable [Service Desk](https://docs.gitlab.com/ee/user/project/service_desk.html) to your project and offer email support.
+By doing so, when your customer sends a new email, a new issue can be created in
+the appropriate project and followed up from there.
+
+## New issue from the group-level Issue Tracker
+
+Head to the Group dashboard and click "Issues" in the sidebar to visit the Issue Tracker
+for all projects in your Group. Select the project you'd like to add an issue for
+using the dropdown button at the top-right of the page.
+
+![Select project to create issue](img/select_project_from_group_level_issue_tracker.png)
+
+We'll keep track of the project you selected most recently, and use it as the default
+for your next visit. This should save you a lot of time and clicks, if you mostly
+create issues for the same project.
+
+![Create issue from group-level issue tracker](img/create_issue_from_group_level_issue_tracker.png)
+
 ## New issue via URL with prefilled fields
 You can link directly to the new issue page for a given project, with prefilled

doc/user/project/issues/csv_export.md

+# Export Issues to CSV **[STARTER]**
+
+> [Introduced](https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/1126) in [GitLab Starter 9.0](https://about.gitlab.com/2017/03/22/gitlab-9-0-released/#export-issues-ees-eep).
+
+Issues can be exported as CSV from GitLab and are sent to your default notification email as an attachment.
+
+## Overview
+
+**Export Issues to CSV** enables you and your team to export all the data collected from issues into
+a **[comma-separated values](https://en.wikipedia.org/wiki/Comma-separated_values)** (CSV) file,
+which stores tabular data in plain text.
+
+> _CSVs are a handy way of getting data from one program to another where one program cannot read the other ones normal output._ [Ref](https://www.quora.com/What-is-a-CSV-file-and-its-uses)
+
+CSV files can be used with any plotter or spreadsheet-based program, such as Microsoft Excel,
+Open Office Calc, or Google Spreadsheets.
+
+## Use cases
+
+Among numerous use cases for exporting issues for CSV, we can name a few:
+
+- Make a snapshot of issues for offline analysis or to communicate with other teams who may not be in GitLab
+- Create diagrams, graphs, and charts from the CSV data
+- Present the data in any other format for auditing or sharing reasons
+- Import the issues elsewhere to a system outside of GitLab
+- Long-term issues' data analysis with multiple snapshots created along the time
+- Use the long-term data to gather relevant feedback given in the issues, and improve your product based on real metrics
+
+## Choosing which issues to include
+
+From the issues page you can narrow down which issues to export using the search bar, along with the All/Open/Closed tabs. All issues returned will be exported, including those not shown on the first page.
+
+![CSV export button](img/csv_export_button.png)
+
+You will be asked to confirm the number of issues and email address for the export, after which the email will begin being prepared.
+
+![CSV export modal dialog](img/csv_export_modal.png)
+
+## Sorting
+
+Exported issues are always sorted by `Issue ID`.
+
+## Format
+
+> **Time Estimate** and **Time Spent** columns were [introduced](https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/2627) in GitLab Starter 10.0.
+>
+> **Weight** and **Locked** columns were [introduced](https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/5300) in GitLab Starter 10.8.
+
+Data will be encoded with a comma as the column delimiter, with `"` used to quote fields if needed, and newlines to separate rows. The first row will be the headers, which are listed in the following table along with a description of the values:
+
+
+| Column  | Description |
+|---------|-------------|
+| Issue ID | Issue `iid` |
+| URL | A link to the issue on GitLab |
+| Title | Issue `title` |
+| State | `Open` or `Closed` |
+| Description | Issue `description` |
+| Author | Full name of the issue author |
+| Author Username | Username of the author, with the `@` symbol omitted |
+| Assignee | Full name of the issue assignee |
+| Assignee Username | Username of the author, with the `@` symbol omitted |
+| Confidential | `Yes` or `No` |
+| Locked | `Yes` or `No` |
+| Due Date | Formated as `YYYY-MM-DD` |
+| Created At (UTC) | Formated as `YYYY-MM-DD HH:MM:SS` |
+| Updated At (UTC) | Formated as `YYYY-MM-DD HH:MM:SS` |
+| Milestone | Title of the issue milestone |
+| Weight | Issue weight |
+| Labels | Title of any labels joined with a `,` |
+| Time Estimate | [Time estimate](../../../workflow/time_tracking.md#estimates) in seconds |
+| Time Spent | [Time spent](../../../workflow/time_tracking.md#time-spent) in seconds |
+
+
+## Limitations
+
+As the issues will be sent as an email attachment, there is a limit on how much data can be exported. Currently this limit is 20MB to ensure successful delivery across a range of email providers. If this limit is reached we suggest narrowing the search before export, perhaps by exporting open and closed issues separately.

doc/user/project/issues/issue_data_and_actions.md

@@ -50,7 +50,7 @@ where there is shared ownership of an issue.
 In [GitLab Starter](https://about.gitlab.com/pricing/), you can
 assign multiple people to an issue.
-Learn more in the [Multiple Assignees documentation](https://docs.gitlab.com/ee/user/project/issues/multiple_assignees_for_issues.html).
+Learn more in the [Multiple Assignees documentation](multiple_assignees_for_issues.md).
 #### 4. Milestone
@@ -90,7 +90,7 @@ If a label doesn't exist yet, you can click **Edit**, and it opens a dropdown me
 - Assign a weight. Larger values are used to indicate more effort is required to complete the issue. Only positive values or zero are allowed.
-Learn more in the [Issue Weight documentation](../../../workflow/issue_weight.md).
+Learn more in the [Issue Weight documentation](https://docs.gitlab.com/ee/workflow/issue_weight.html).
 #### 9. Participants
@@ -103,7 +103,7 @@ Learn more in the [Issue Weight documentation](../../../workflow/issue_weight.md
 - Unsubscribe: if you are receiving notifications on that issue but no
   longer want to receive them, unsubscribe from it.
-Read more in the [notifications documentation](../../../workflow/notifications.md#issue--epics--merge-request-events).
+Read more in the [notifications documentation](https://docs.gitlab.com/ee/workflow/notifications.html#issue--epics--merge-request-events).
 #### 11. Reference

doc/user/project/issues/multiple_assignees_for_issues.md

+# Multiple Assignees for Issues **[STARTER]**
+
+> **Note:**
+[Introduced](https://gitlab.com/gitlab-org/gitlab-ee/issues/1904)
+in [GitLab Starter 9.2](https://about.gitlab.com/2017/05/22/gitlab-9-2-released/#multiple-assignees-for-issues).
+
+## Overview
+
+In large teams, where there is shared ownership of an issue, it can be difficult
+to track who is working on it, who already completed their contributions, who
+didn't even start yet.
+
+In [GitLab Enterprise Edition](https://about.gitlab.com/pricing/),
+you can also select multiple assignees to an issue, making it easier to
+track, and making clearer who is accountable for it.
+
+![multiple assignees for issues](img/multiple_assignees_for_issues.png)
+
+## Use cases
+
+Consider a team formed by frontend developers, backend developers,
+UX designers, QA testers, and a product manager working together to bring an idea to
+market.
+
+Multiple Assignees for Issues makes collaboration smother,
+and allows shared responsibilities to be clearly displayed.
+All assignees are shown across your team's workflows and receive notifications (as they
+would as single assignees), simplifying communication and ownership.
+
+Once an assignee had their work completed, they would remove themselves as assignees, making
+it clear that their role is complete.
+
+## How it works
+
+From an opened issue, expand the right sidebar, locate the assignees entry,
+and click on **Edit**. From the dropdown menu, select as many users as you want
+to assign the issue to.
+
+![adding multiple assignees](img/multiple_assignees.gif)
+
+An assignee can be easily removed by deselecting them from the same dropdown menu.

doc/user/project/issues/related_issues.md

+# Related issues **[STARTER]**
+
+> [Introduced][ee-1797] in [GitLab Starter][ee] 9.4.
+
+Related issues are a bi-directional relationship between any two issues
+and appear in a block below the issue description. Issues can be across groups
+and projects.
+
+The relationship only shows up in the UI if the user can see both issues.
+
+## Adding a related issue
+
+You can relate one issue to another by clicking the related issues "+" button
+in the header of the related issue block. Then, input the issue reference number
+or paste in the full URL of the issue.
+
+Issues of the same project can be specified just by the reference number.
+Issues from a different project require additional information like the
+group and the project name. For example:
+
+- same project: `#44`
+- same group: `project#44 `
+- different group: `group/project#44`
+
+Valid references will be added to a temporary list that you can review.
+When ready, click the green "Add related issues" button to submit.
+
+![Adding a related issue](img/related_issues_add.png)
+
+## Removing a related issue
+
+In the related issues block, click the "x" icon on the right-side of each issue
+token that you wish to remove. Due to the bi-directional relationship, it
+will no longer appear in either issue.
+
+![Removing a related issue](img/related_issues_remove.png)
+
+Please access our [permissions] page for more information.
+
+Additionally, you are also able to manage related issues through [our API].
+
+[ee]: https://about.gitlab.com/pricing/
+[ee-1797]: https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/1797
+[permissions]: ../../permissions.md
+[Our API]: https://docs.gitlab.com/ee/api/issue_links.html