Add new GitLab for Jira Cloud page to admin docs
This MR:
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Adds the new GitLab for Jira Cloud app administration page to the left nav
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Moves the Project integrations overview page up for a more logical order
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Link to the merge request that introduced the new page: gitlab!132087 (merged) -
Give the MR a descriptive title. -
Optional. Link to the review app showing the new page: