This PR introduces a new UI element type for Gitea called `flex-item`.
It consists of a horizontal card with a leading, main and trailing part:

The idea behind it is that in Gitea UI, we have many cases where we use
this kind of layout, but it is achieved in many different ways:
- grid layout
- `.ui.list` with additional hacky flexbox
- `.ui.key.list` - looks to me like a style set originally created for
ssh/gpg key list, was used in many other places
- `.issue.list` - created for issue cards, used in many other places
- ...
This new style is based on `.issue.list`, specifically the refactoring
of it done in #25750.
In this PR, the new element is introduced and lots of templates are
being refactored to use that style. This allows to remove a lot of
page-specific css, makes many of the elements responsive or simply
provides a cleaner/better-looking way to present information.
A devtest section with the new style is also available.
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<summary>Screenshots (left: before, right: after)</summary>



















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Co-authored-by: Giteabot <teabot@gitea.io>
Fix#25628
Diff with ignoring space:
https://github.com/go-gitea/gitea/pull/25629/files?diff=unified&w=1
The "modal" shouldn't appear between "ui attached segment", otherwise
these segments lose margin-top.
After the fix:
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The plan is that all built-in auth providers use inline SVG for more
flexibility in styling and to get the GitHub icon to follow
`currentcolor`. This only removes the `public/img/auth` directory and
adds the missing svgs to our svg build.
It should map the built-in providers to these SVGs and render them. If
the user has set a Icon URL, it should render that as an `img` tag
instead.
```
gitea-azure-ad
gitea-bitbucket
gitea-discord
gitea-dropbox
gitea-facebook
gitea-gitea
gitea-gitlab
gitea-google
gitea-mastodon
gitea-microsoftonline
gitea-nextcloud
gitea-twitter
gitea-yandex
octicon-mark-github
```
GitHub logo is now white again on dark theme:
<img width="431" alt="Screenshot 2023-06-12 at 21 45 34"
src="27a43504-d60a-4132-a502-336b25883e4d">
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Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Close#24808
Co-Authour @wxiaoguang @silverwind
1. Most svgs are found from https://worldvectorlogo.com/ , and some are
from conversion of png to svg. (facebook and nextcloud). And also
changed `templates/user/settings/security/accountlinks.tmpl`.
2. Fixed display name and iconurl related logic
# After
<img width="1436" alt="Screen Shot 2023-06-05 at 14 09 05"
src="a5db39d8-1ab0-4676-82a4-fba60a1d1f84">
On mobile
<img width="378" alt="Screen Shot 2023-06-05 at 14 09 46"
src="71d0f51b-baac-4f48-8ca2-ae0e013bd62e">
user/settings/security/accountlinks (The dropdown might be improved
later)
<img width="973" alt="Screen Shot 2023-06-01 at 10 01 44"
src="27010e7e-2785-4fc5-8c49-b06621898f37">
---------
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Some minor UI improvements together (then no need to review 3 small PRs)
# The Map for auth sources
Close#24826
Now the LDAP and OAuth2 both have multiple line editor for the map (and
it can be resized by the handler)
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# The account link display
Before, the UI is misaligned
This PR fixes the misalignment, remove "float right", and show the auth
source name and auth type (in the tooltip).
And the "active" color is changed from dark red to primary color.
Before:
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After:
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# The UI logo alignment
Changed file: `css/base.css`.
Before, there were some "fine tunes", these "fine tunes" only causes
misalignment.
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After this PR:
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* Refactor `i18n` to `locale`
- Currently we're using the `i18n` variable naming for the `locale`
struct. This contains locale's specific information and cannot be used
for general i18n purpose, therefore refactoring it to `locale` makes
more sense.
- Ref: https://github.com/go-gitea/gitea/pull/20096#discussion_r906699200
* Update routers/install/install.go