gitea/templates/package
Denys Konovalov be23b73e85
Restructure issue list template, styles ()
This PR does various modifications on the issue list shared template:
- restructure layout to achieve better responsiveness
-  fix various style issues
- restructure styles (better result with less code :)
- remove numerous `gt-*` patches and other unneeded classes -> use
existing css classes

<details>
<summary>Before:</summary>

![Bildschirmfoto vom 2023-07-07
14-35-00](https://github.com/go-gitea/gitea/assets/47871822/5301fc80-d58b-41c2-8090-5867e2e8459c)
![Bildschirmfoto vom 2023-07-07
14-35-19](https://github.com/go-gitea/gitea/assets/47871822/d36ab691-7dc4-44bb-a8f6-a4105a2a6777)
![Bildschirmfoto vom 2023-07-07
14-35-43](https://github.com/go-gitea/gitea/assets/47871822/0762c852-eb40-4b00-8757-c5dbfd2ae569)
</details>

<details>
<summary>After:</summary>

![Bildschirmfoto vom 2023-07-07
14-32-04](https://github.com/go-gitea/gitea/assets/47871822/0ac42d36-f98f-451a-b556-70c913d19df8)
![Bildschirmfoto vom 2023-07-07
14-31-32](https://github.com/go-gitea/gitea/assets/47871822/520fac9c-33e3-4290-bfe1-6e941f1100f8)
![Bildschirmfoto vom 2023-07-07
14-31-14](https://github.com/go-gitea/gitea/assets/47871822/05ad46bb-3c67-403d-85b8-d12d64f99c59)

</details>

---------

Co-authored-by: silverwind <me@silverwind.io>
..
content Fix broken translations for package documantion ()
metadata Add CRAN package registry ()
shared Restructure issue list template, styles ()
settings.tmpl Fix inconsistent user profile layout across tabs ()
view.tmpl Fix inconsistent user profile layout across tabs ()