Add desired changes from Kickball/awesome-selfhosted (upstream).

This commit correctly indents the Firefox Content Server and Firefox
Sync Server line items, as they depend on the Firefox Auth Server.
Further, this commit adds `reduc.io` and `1Backend` line items, and
rephrases the description for SharpPaste.

README.md

@@ -982,7 +982,7 @@ See https://github.com/n1trux/awesome-sysadmin#monitoring and https://github.com
 - [pbnh](https://github.com/bhanderson/pbnh) - Pastebin inspired from project pb and hastebin, with an API and a SQL-based backend. `MIT` `Python`
 - [Phaste](https://pste.pw) - Phalcon-based, MySQL pastebin application with privacy-respecting Piwik integration and syntax highlighting. ([Source Code](https://github.com/FoxDev/Phaste)) `AGPL-3.0` `PHP`
 - [PrivateBin](https://privatebin.info/) - PrivateBin is a minimalist, opensource online pastebin/discussion board where the server has zero knowledge of hosted data. ([Demo](https://privatebin.net/), [Source Code](https://github.com/PrivateBin/PrivateBin)) `Zlib` `PHP`
-- [SharpPaste](https://github.com/phonicmouse/SharpPaste) - Simple and modern open-source pastebin made with C# and NancyFX that just works. ([Demo](https://sharppaste.nl/)) `MIT` `C#/ASP.NET`
+- [SharpPaste](https://github.com/phonicmouse/SharpPaste) - Cross-platform C# pastebin with client-side AES-256 encryption that just works. ([Demo](https://sharppaste.nl/)) `MIT` `C#/ASP.NET`
 - [snipt](https://snipt.net/) - Long-term memory for coders. Share and store code snippets. ([Source Code](https://github.com/nicksergeant/snipt/)) `BSD` `Python`
 - [Stikked](https://github.com/claudehohl/Stikked) - Advanced and beautiful pastebin. `GPL-3.0` `PHP`
 - [Sup3rS3cretMes5age](https://github.com/algolia/sup3rS3cretMes5age) - Very simple (to deploy and to use) secret message service using Hashicorp Vault as a secrets storage. `MIT` `Go`
@@ -1232,6 +1232,7 @@ See https://staticsitegenerators.net and https://www.staticgen.com
 - [Lstu](https://github.com/ldidry/lstu) - _Let's SHorten That Url_ - Lightweight URL shortener. `WTFPL` `Perl`
 - [Nimbus](https://github.com/ethanal/nimbus) - URL shortener and file sharer with a drag-and-drop OS X menu bar client and web interface. `MIT` `Python`
 - [Polr](https://project.polr.me/) - Modern, minimalist, modular, and lightweight URL shortener. ([Source Code](https://github.com/Cydrobolt/polr)) `GPL-2.0` `PHP`
+- [reduc.io](https://github.com/ziyasal/reducio) - URL shortener service written in Scala, using Akka-Http and Redis. `MIT` `Scala`
 - [shorturl](https://github.com/prologic/shorturl) - Simple URL shortener with very tiny URLs. ([Demo](https://url.mills.io)) `MIT` `Go`
 - [shuri](https://github.com/pips-/shuri) - SHort URI - Lighweight URL shortener. `MIT` `PHP`
 - [url-shortener](https://github.com/cagataycali/url-shortener) `⚠` - Shitty url shortener, emoji and AI powered. `MIT` `Nodejs`
@@ -1283,6 +1284,7 @@ See also [Documentation Generators](#documentation-generators), [Wikimatrix](htt
 
 **[`^        back to top        ^`](#)**
 
+- [1Backend](https://1backend.com) - Self-host web apps, microservices and lambdas on your server. Advanced features enable service reuse and composition. ([Source Code](https://github.com/1backend/1backend)) `AGPL-3.0` `Go`
 - [Cloudron](https://cloudron.io) - Effortlessly self-host web apps on your server. ([Source Code](https://git.cloudron.io/groups/cloudron)) `AGPL-3.0` `Nodejs/Docker`
 - [DietPi](http://dietpi.com/) - Minimal Debian OS optimized for single-board computers, which allows you to easily install and manage several services for selfhosting at home. ([Source Code](https://github.com/Fourdee/DietPi)) `GPL-2.0` `Shell`
 - [DPlatform](https://dfabric.github.io/DPlatform-ShellCore/) - Deploy self-hosted apps easily: simple, bloat-free, independent installation. ([Source Code](https://github.com/j8r/DPlatform)) `MIT` `Shell`