### Description
Fixes the organization page header layout issue where:
1. Long organization descriptions did not wrap and instead stretched the
header container out of bounds.
2. The "Follow" button floated dynamically adjacent to the description's
right edge depending on the description length, instead of remaining at
a fixed position aligned with the right edge of the page container.
Fixes https://github.com/go-gitea/gitea/issues/38445
### Cause
The flex container `<div class="flex-relaxed-list">` lacked `tw-flex-1`
(to grow to fill the container) and `tw-min-w-0` (to allow it to shrink
below its content's size). Consequently, the flex minimum width
defaulted to `min-content`, stretching the container for long unwrapped
descriptions.
### Solution
Added `tw-flex-1 tw-min-w-0` to the `<div class="flex-relaxed-list">`
container in `templates/org/header.tmpl`. This restricts the width,
enables proper text wrapping, and fixes the "Follow" button to the right
edge of the content container.
### Screenshots
Before
<img width="1300" height="615" alt="image"
src="https://github.com/user-attachments/assets/11e6ab99-b847-45ff-8bdb-8622bfeee8aa"
/>
After
<img width="1300" height="615" alt="image"
src="https://github.com/user-attachments/assets/84ac0633-b192-4be5-8226-13bfad3ab2ec"
/>
---------
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Follow-up to #37987, addressing the unresolved review comments on the
org members search form.
And fix more trivial problems together (see the commit titles)
---------
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Purpose:
1. Make the whole code base have unified "item" layout
2. Clarify our "list" styles: "flex-relaxed-list", "flex-divided-list"
3. Prepare to replace legacy "ui relaxed list"
* https://github.com/go-gitea/gitea/pull/37445#discussion_r3144458865
4. Prepare for refactoring the "pull merge box", it needs the
"flex-divided-list"
* related to "Refactor pull request view (*)" like #37451
5. Fix legacy abuses of "flex-list", e.g.: repo home sidebar
1. make our "route group pattern match" also update chi's RoutePattern
2. fix incorrect "NotFound" call in conda package
3. make ".flex-item .flex-item-main" has a general gap, then no need to
use `tw` tricks
4. improve the "test webhook" UI
1. correct the modal usage on "admin email list" page (then
`web_src/js/features/admin/emails.ts` is removed)
2. use `addDelegatedEventListener` instead of `jQuery().on`
3. more jQuery related changes and remove jQuery from
`web_src/js/features/common-button.ts`
4. improve `confirmModal` to make it support header, and remove
incorrect double-escaping
5. fix more typescript related types
6. fine tune devtest pages and add more tests
Fixes https://github.com/go-gitea/gitea/issues/30082.
Adds a new linter that searches for non-existant SVG images in
templates. Output before the fix was:
```
$ make lint-templates
SVG "octicon-warning" not found, used in templates/devtest/flex-list.tmpl
SVG "octicon-warning" not found, used in templates/devtest/flex-list.tmpl
SVG "octicon-markup" not found, used in templates/repo/diff/comment_form.tmpl
make: *** [Makefile:438: lint-templates] Error 1
```
<img width="306" alt="Screenshot 2024-03-25 at 23 31 05"
src="https://github.com/go-gitea/gitea/assets/115237/1052d1a9-bfec-4d5a-9cae-f895f78f7c93">
Replace #26761
It's better to keep children elements simple, and let parent containers
layout the necessary padding/margin.
The old `not(:last-child)` and `.flex-item + .flex-item` are not easy to
maintain (for example, what if the developer would like to use a "tiny
height" item?)
The old approach also makes some UI look strange because the first item
doesn't have proper padding-top.
In this PR, we just simply use `.flex-item { padding: ... }`:
* Developers could manually set the item height they want easily
* It's easier to make it work with various containers -- with padding
(`ui segment`) and without padding (`div`)
And added more samples/examples.

Co-authored-by: Giteabot <teabot@gitea.io>
Fix#26617
1. Separate the "flex-list" examples into a dedicated template, and add some more examples
2. Use `flex-basis` instead of `flex-shrink` for `flex-item-trailing`, to avoid wrapping the texts too aggressively
3. Some `flex-wrap: wrap;` are removed