Fixes https://github.com/go-gitea/gitea/issues/30005. Regression from
https://github.com/go-gitea/gitea/pull/29945.
There was only once instance of `tw-content-center` before that PR, so I
just ran below command and reverted that one instance.
```sh
perl -p -i -e 's#tw-content-center#tw-items-center#g' web_src/js/**/* templates/**/* models/**/* tests/**/*
```
Tested a few things, all working fine. Not sure if the chinese machine
translation is good.
---------
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Follow #29165
* some of them are incorrect, which would lead to double escaping (eg:
`(print (Escape $.RepoLink)`)
* other of them are not necessary, because `Tr` handles strings&HTML
automatically
Suggest to review by "unified view":
https://github.com/go-gitea/gitea/pull/29394/files?diff=unified&w=0
This PR refactors a bunch of projects-related code, mostly the
templates.
The following things were done:
- rename boards to columns in frontend code
- use the new `ctx.Locale.Tr` method
- cleanup template, remove useless newlines, classes, comments
- merge org-/user and repo level project template together
- move "new column" button into project toolbar
- move issue card (shared by projects and pinned issues) to shared
template, remove useless duplicated styles
- add search function to projects (to make the layout more similar to
milestones list where it is inherited from 😆)
- maybe more changes I forgot I've done 😆Closes#24893
After:
![Bildschirmfoto vom 2023-08-10
23-02-00](https://github.com/go-gitea/gitea/assets/47871822/cab61456-1d23-4373-8163-e567f1b3b5f9)
![Bildschirmfoto vom 2023-08-10
23-02-26](https://github.com/go-gitea/gitea/assets/47871822/94b55d60-5572-48eb-8111-538a52d8bcc6)
![Bildschirmfoto vom 2023-08-10
23-02-46](https://github.com/go-gitea/gitea/assets/47871822/a0358f4b-4e05-4194-a7bc-6e0ecba5a9b6)
---------
Co-authored-by: silverwind <me@silverwind.io>