So I found this [linter](https://github.com/Riverside-Healthcare/djlint)
which features a mode for go templates, so I gave it a try and it did
find a number of valid issue, like unbalanced tags etc. It also has a
number of bugs, I had to disable/workaround many issues.

Given that this linter is written in python, this does add a dependency
on `python` >= 3.8 and `poetry` to the development environment to be
able to run this linter locally.

- `e.g.` prefixes on placeholders are removed because the linter had a
false-positive on `placeholder="e.g. cn=Search"` for the `attr=value`
syntax and it's not ideal anyways to write `e.g.` into a placeholder
because a placeholder is meant to hold a sample value.
- In `templates/repo/settings/options.tmpl` I simplified the logic to
not conditionally create opening tags without closing tags because this
stuff confuses the linter (and possibly the reader as well).

### File path before/after

<img width="522" alt="Screenshot 2023-05-01 at 13 23 33"
src="https://user-images.githubusercontent.com/115237/235445636-57776038-c98e-4cab-8abe-045138a76958.png">
<img width="522" alt="Screenshot 2023-05-01 at 13 24 08"
src="https://user-images.githubusercontent.com/115237/235445638-70bef62a-1b70-41f8-ba51-728db4d54402.png">


### File edit before/after

<img width="499" alt="Screenshot 2023-05-01 at 13 24 46"
src="https://user-images.githubusercontent.com/115237/235445676-7b3cc23e-289b-40a6-8d4f-0d7fb2efb55e.png">
<img width="497" alt="Screenshot 2023-05-01 at 13 24 52"
src="https://user-images.githubusercontent.com/115237/235445677-db9f3974-8456-46de-a32b-9198110c0540.png">

### Cherry-pick before/after

<img width="590" alt="Screenshot 2023-05-01 at 13 25 30"
src="https://user-images.githubusercontent.com/115237/235445717-99445024-1bb2-46d4-9bd8-8086bad57d34.png">
<img width="582" alt="Screenshot 2023-05-01 at 13 25 37"
src="https://user-images.githubusercontent.com/115237/235445720-9c1dc497-eb23-4e10-a727-27f4d6df69e6.png">

* Add main aria landmark to templates
 * Adjust some titles to improve understanding of location in navigation

Contributed by @Forgejo

* 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

* make blue really blue

* replace blue button and label classes with primary

* add --color-blue-dark

* add light color variants, tweak a few colors

* fix colors

* add comment

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

This code adds a simple endpoint to apply patches to repositories and
branches on gitea. This is then used along with the conflicting checking
code in #18004 to provide a basic implementation of cherry-pick revert.

Now because the buttons necessary for cherry-pick and revert have 
required us to create a dropdown next to the Browse Source button
I've also implemented Create Branch and Create Tag operations.

Fix #3880 
Fix #17986 

Signed-off-by: Andrew Thornton <art27@cantab.net>