Replaced unmaintained linx-server with better maintained fork (#2529)

Signed-off-by: Domarys Correa <domaryscorrea@gmail.com>

README.md

@@ -536,6 +536,7 @@ _CMS are a practical way to setup a website with many features. CMS often come w
 - [Drupal](https://www.drupal.org/) - Advanced open source content management platform. ([Source Code](http://cgit.drupalcode.org/drupal)) `GPL-2.0` `PHP`
 - [eLabFTW](http://www.elabftw.net) - Online lab notebook for research labs. Store experiments, use a database to find reagents or protocols, use trusted timestamping to legally timestamp an experiment, export as pdf or zip archive, share with collaborators…. ([Demo](https://demo.elabftw.net), [Source Code](https://github.com/elabftw/elabftw)) `AGPL-3.0` `PHP`
 - [Expressa](https://github.com/thomas4019/expressa) - Content Management System for powering database driven websites using JSON schemas. Provides permission management and automatic REST APIs. `MIT` `Nodejs`
+- [Flextype](https://flextype.org/) - Flextype is an open-source Hybrid Content Management System with the freedom of a headless CMS and with the full functionality of a traditional CMS. ([Demo](https://demo.flextype.org/), [Source Code](https://github.com/flextype/flextype)) `MIT` `PHP`
 - [GetSimple CMS](http://get-simple.info/) - The Simplest Content Management System. Ever. ([Source Code](https://github.com/GetSimpleCMS/GetSimpleCMS)) `GPL-3.0` `PHP`
 - [Joomla!](https://www.joomla.org/) - Advanced Content Management System (CMS). ([Source Code](https://github.com/joomla/joomla-cms)) `GPL-2.0` `PHP`
 - [KeystoneJS](http://keystonejs.com/) - CMS and Web Application Platform. ([Demo](http://demo.keystonejs.com/), [Source Code](https://github.com/keystonejs/keystone)) `MIT` `Nodejs`
@@ -622,6 +623,7 @@ _See https://github.com/n1trux/awesome-sysadmin#dns_
 - [Docspell](https://docspell.org) - Auto-tagging document organizer and archive. ([Source Code](https://github.com/eikek/docspell)) `GPL-3.0` `Scala/Java`
 - [EdPaper](https://github.com/Edraens/EdPaper) - PDF organizer with users management. `MIT` `PHP`
 - [EveryDocs](https://github.com/jonashellmann/everydocs-core/) - A simple Document Management System for private use with basic functionality to organize your documents digitally. `GPL-3.0` `Ruby`
+- [I, Librarian](https://i-librarian.net) - I, Librarian can organize PDF papers and office documents. It provides a lot of extra features for students and research groups both in industry and academia. ([Demo](https://i-librarian.net/demo/), [Source Code](https://github.com/mkucej/i-librarian-free)) `GPL-3.0` `PHP`
 - [Mayan EDMS](http://www.mayan-edms.com) - Free Open Source Electronic Document Management System. An electronic vault for your documents with preview generation, OCR, and automatic categorization among other features. ([Source Code](https://gitlab.com/mayan-edms/mayan-edms)) `Apache-2.0` `Python`
 - [Papermerge](https://www.papermerge.com) - Open Source Document Management System focused on scanned documents (electronic archives). Features file browsing in similar way to dropbox/google drive. OCR, full text search, text overlay/selection. ([Source Code](https://github.com/ciur/papermerge)) `Apache-2.0` `Python`
 - [Paperless](https://github.com/the-paperless-project/paperless) - Scan, index, and archive all of your paper documents. `GPL-3.0` `Python`
@@ -782,7 +784,7 @@ _See https://github.com/n1trux/awesome-sysadmin#distributed-filesystems_
 - [ipfs.pics](https://github.com/ipfspics/server) - ipfs.pics is a distributed image hosting website. `AGPL-3.0` `PHP`
 - [Jirafeau](https://gitlab.com/mojo42/Jirafeau) - Jirafeau is a web site permitting to upload a file in a simple way and give an unique link to it. ([Demo](http://jirafeau.net/)) `AGPL-3.0` `PHP`
 - [Kleeja](https://kleeja.net/) - File Upload/sharing application, used by thousands of webmasters since 2007. ([Source Code](https://github.com/kleeja-official/kleeja)) `GPL-2.0` `PHP`
-- [linx-server](https://github.com/andreimarcu/linx-server) - Simple file sharing and pastebin with API, auto-expiry, deletion keys, and web seed support. ([Demo](https://demo.linx-server.net/)) `GPL-3.0` `Go`
+- [linx-server](https://github.com/ZizzyDizzyMC/linx-server) - Simple file sharing and pastebin with API, auto-expiry, deletion keys, and web seed support. ([Demo](https://put.icu/)) `GPL-3.0` `Go`
 - [lufi](https://framagit.org/fiat-tux/hat-softwares/lufi) - Let's Upload that FIle, client-side encrypted. ([Demo](https://demo.lufi.io), [Source Code](https://framagit.org/fiat-tux/hat-softwares/lufi/tree/master)) `AGPL-3.0` `Perl`
 - [lutim](https://github.com/ldidry/lutim) - Let's Upload That Image. `AGPL-3.0` `Perl`
 - [OnionShare](https://github.com/micahflee/onionshare) - Securely and anonymously share a file of any size. `GPL-2.0` `Python`
@@ -861,6 +863,7 @@ _Games, game servers and control panels._
 - [Neko](https://github.com/nurdism/neko) - A self hosted virtual browser (rabb.it clone) that runs in Docker. `Apache-2.0` `Docker/Go`
 - [oneye](https://oneye-project.org/) - Cloud software to access your data from everywhere with any browser. ([Demo](https://wiki.oneye-project.org/0.9:demo), [Source Code](https://github.com/oneye/oneye)) `AGPL-3.0` `PHP`
 - [OS.js](https://www.os-js.org/) - Desktop implementation for your browser with a fully-fledged window manager, Application APIs, GUI toolkits and filesystem abstraction. ([Demo](https://demo.os-js.org/), [Source Code](https://github.com/os-js/OS.js)) `BSD-2-Clause` `Nodejs`
+- [ShellHub](https://www.shellhub.io) - ShellHub is a modern SSH server for remotely accessing linux devices via command line (using any SSH client) or web-based user interface, designed as an alternative to sshd. Think ShellHub as centralized SSH for the the edge and cloud computing. ([Source Code](https://github.com/shellhub-io/shellhub)) `Apache-2.0` `Go/Other`
 - [Sshwifty](https://github.com/nirui/sshwifty) - Sshwifty is a SSH and Telnet connector made for the Web. `AGPL-3.0` `Go/Docker`
 - [tmate](https://tmate.io/) - Instant terminal sharing. ([Source Code](https://github.com/tmate-io/tmate)) `ISC` `C`
 
@@ -1186,7 +1189,6 @@ _See also [Wikis](#wikis)_
 **[`^        back to top        ^`](#)**
 
 - [Bitwarden](https://bitwarden.com/) `⚠` - Password manager with webapp, browser extension, and mobile app. ([Source Code](https://github.com/bitwarden/core)) `AGPL-3.0` `C#`
-- [bitwarden_rs](https://github.com/dani-garcia/bitwarden_rs) - Lightweight Bitwarden server API implementation written in Rust. `GPL-3.0` `Rust`
 - [keeweb](https://keeweb.info/) - This webapp is a browser and desktop password manager compatible with KeePass databases. ([Source Code](https://github.com/keeweb/keeweb)) `MIT` `HTML5`
 - [Padloc](https://padloc.app/) - A modern, open source password manager for individuals and teams. ([Source Code](https://github.com/padloc/padloc)) `GPL-3.0` `Nodejs`
 - [Passbolt](https://www.passbolt.com/) - Password manager dedicated for managing passwords in a collaborative way on any Web server, using a MySQL database backend. ([Source Code](https://github.com/passbolt/passbolt_api)) `AGPL-3.0` `PHP`
@@ -1196,6 +1198,8 @@ _See also [Wikis](#wikis)_
 - [Shaark](https://github.com/MarceauKa/shaark) - All in one platform for your links, stories, passwords and albums. Built with Laravel and Vue.js. `MIT` `PHP`
 - [sysPass](http://www.syspass.org/) - Multiuser password management system. ([Demo](http://demo.syspass.org/), [Source Code](https://github.com/nuxsmin/sysPass)) `GPL-3.0` `PHP`
 - [Teampass](http://teampass.net/) - Password manager dedicated for managing passwords in a collaborative way. One symmetric key is used to encrypt all shared/team passwords and stored server side in a file and the database. works on any server Apache, MySQL and PHP. ([Source Code](https://github.com/nilsteampassnet/TeamPass)) `GPL-3.0` `PHP`
+- [Vaultwarden](https://github.com/dani-garcia/vaultwarden) - Lightweight Bitwarden server API implementation written in Rust. `GPL-3.0` `Rust`
+
 
 ## Pastebins