This PR will avoid load pullrequest.Issue twice in pull request list
page. It will reduce x times database queries for those WIP pull
requests.
Partially fix #29585
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Co-authored-by: Giteabot <teabot@gitea.io>
- Replace `<table>` with flexbox
- Add issue modification time and issue number
- Remove big title
- Replace tabs with menu items
- Add clicked item deletion on back button cache restoration
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Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>