Refactor docs (#21627)

This patch:
- Rename some files( `.md` to `.en-us.md`), fix missed translation copy
- Update link which shoud be refer to `../hacking-on-gitea/` instead of
`../make/` (outdated)
- Update `_redirects`:
  -  redirect `/{zh-cn|fr-fr}/make/` to `../hacking-on-gitea/`
  - redirect `/zh-cn/third-party-tools/` to `/zh-cn/integrations/`
- Delete duplicated/outdated files.
- Update menu `weight` of developers.zh-cn.md

Signed-off-by: Xinyu Zhou <i@sourcehut.net>

docs/content/doc/installation/on-cloud-provider.en-us.md

@@ -0,0 +1,56 @@
+---
+date: "2016-12-01T16:00:00+02:00"
+title: "Install on Cloud Provider"
+slug: "install-on-cloud-provider"
+weight: 20
+toc: false
+draft: false
+menu:
+  sidebar:
+    parent: "installation"
+    name: "On cloud provider"
+    weight: 20
+    identifier: "install-on-cloud-provider"
+---
+
+# Installation on Cloud Provider
+
+**Table of Contents**
+
+{{< toc >}}
+
+## Cloudron
+
+Gitea is available as a 1-click install on [Cloudron](https://cloudron.io).
+Cloudron makes it easy to run apps like Gitea on your server and keep them up-to-date and secure.
+
+[![Install](/cloudron.svg)](https://cloudron.io/button.html?app=io.gitea.cloudronapp)
+
+The Gitea package is maintained [here](https://git.cloudron.io/cloudron/gitea-app).
+
+There is a [demo instance](https://my.demo.cloudron.io) (username: cloudron password: cloudron) where
+you can experiment with running Gitea.
+
+## Vultr
+
+Gitea can be found in [Vultr](https://www.vultr.com)'s marketplace.
+
+To deploy Gitea to Vultr, have a look at the [Vultr Marketplace](https://www.vultr.com/marketplace/apps/gitea).
+
+## DigitalOcean
+
+[DigitalOcean](https://www.digitalocean.com) has Gitea as droplet in their marketplace.
+
+To deploy Gitea to DigitalOcean, have a look at the [DigitalOcean Marketplace](https://marketplace.digitalocean.com/apps/gitea).
+
+## Linode
+
+[Linode](https://www.linode.com/) has Gitea as an app in their marketplace.
+
+To deploy Gitea to Linode, have a look at the [Linode Marketplace](https://www.linode.com/marketplace/apps/linode/gitea/).
+
+## alwaysdata
+
+[alwaysdata](https://www.alwaysdata.com/) has Gitea as an app in their marketplace.
+
+To deploy Gitea to alwaysdata, have a look at the [alwaysdata Marketplace](https://www.alwaysdata.com/en/marketplace/gitea/).