Merge branch 'docs/create_issue_quick_actions' into 'master'

Added mention of Quick actions

See merge request gitlab-org/gitlab-ce!30881

doc/user/project/issues/managing_issues.md

@@ -7,7 +7,9 @@ you can do with issues.
 
 ## Create a new Issue
 
-When you create a new issue, you'll be prompted to fill in the [data and fields of the issue](issue_data_and_actions.md#parts-of-an-issue), as illustrated below.
+When you create a new issue, you'll be prompted to fill in the [data and fields of the issue](issue_data_and_actions.md#parts-of-an-issue), as illustrated below. If you know
+the values you want to assign to an issue, you can use the [Quick actions](../quick_actions.md)
+feature to input values, instead of selecting them from lists.
 
 ![New issue from the issues list](img/new_issue.png)