wxiaoguang 72c68177ab Improve issue history dialog and make poster can delete their own history (#27323) ...

Fix #27313 (see the comment)

And some UI improvements:

### Before


![image](https://github.com/go-gitea/gitea/assets/2114189/420a314d-8f34-4e30-a557-f41cf4f0d2f2)


![image](https://github.com/go-gitea/gitea/assets/2114189/60ca0be4-b55e-4e65-be73-fd53e0d4fc36)


### After


![image](https://github.com/go-gitea/gitea/assets/2114189/d354f815-5a0c-4e63-8d59-d03ed344dbea)


![image](https://github.com/go-gitea/gitea/assets/2114189/6ef437a4-aa6f-4917-a260-00625ee71e79)


![image](https://github.com/go-gitea/gitea/assets/2114189/9d88a36c-616b-4dc9-8c6b-76adaad8acf6)

2023-09-28 08:43:20 +00:00

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animations.css

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breadcrumb.css

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button.css

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card.css

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comment.css

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divider.css

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flexcontainer.css

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modal.css

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navbar.css

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normalize.css

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select.css

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svg.css

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tippy.css

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toast.css

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