Remove Static Site Generator Duplicates

Remove the static site generator duplicates identified in #506.

* Remove Bolt (CMS)
* Remove Grav (CMS)
* Remove Codex (Wikis)

README.md

@@ -354,14 +354,12 @@ CMS are a practical way to setup a website with many features. CMS often come wi
   * [Apostrophe 2](http://apostrophenow.org/) - A node.js CMS with a focus on extensible in-context editing tools. ([Demo](http://demo.apostrophenow.com/), [Source Code](https://github.com/punkave/apostrophe)) `MIT` `NodeJS`
   * [Baun](http://bauncms.com/) - A modern, lightweight, extensible CMS for PHP. ([Source Code](https://github.com/BaunCMS/Baun)) `MIT` `PHP`
   * [BigTree CMS](https://www.bigtreecms.org/) - Straightforward, well documented, and capable written with PHP and MySQL. ([Source Code](https://github.com/bigtreecms/BigTree-CMS)) `LGPLv2` `PHP`
-  * [Bolt](https://bolt.cm/) - Sophisticated, lightweight & simple CMS. ([Source Code](https://github.com/bolt/bolt)) `MIT` `PHP`
   * [CMS Made Simple](http://www.cmsmadesimple.org/) - Open source content management system, faster and easier management of website contents, scalable for small businesses to large corporations. ([Source Code](http://svn.cmsmadesimple.org/svn/cmsmadesimple/trunk/)) `GPL` `PHP`
   * [Concrete 5 CMS](http://www.concrete5.org/) - An open source content management system. ([Source Code](https://github.com/concrete5/concrete5)) `MIT` `PHP`
   * [CouchCMS](http://www.couchcms.com/) - Simple Open-Source CMS for designers. ([Source Code](https://github.com/CouchCMS/CouchCMS)) `CPALv1` `PHP`
   * [Directus](http://getdirectus.com/) - Directus is a powerful and intuitive headless CMS for managing SQL databases with custom architectures. Built around a robust and extensible API, this decoupled content management framework is perfect for websites, apps, or multi-client projects. ([Source Code](https://github.com/directus/directus)) `GPL` `PHP`
   * [Drupal](https://www.drupal.org/) - Advanced open source content management platform. ([Source Code](http://cgit.drupalcode.org/drupal)) `GPL` `PHP`
   * [eLabFTW](http://www.elabftw.net) - An 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…. ([Source Code](https://github.com/elabftw/elabftw), [Demo](https://demo.elabftw.net)) `AGPLv3` `PHP`
-  * [Grav](https://getgrav.org/) - Modern, Crazy Fast, Ridiculously Easy and Amazingly Powerful Flat-File CMS. ([Source Code](https://github.com/getgrav/grav)) `MIT` `PHP`
   * [GetSimple CMS](http://get-simple.info/) - The Simplest Content Management System. Ever. `GPLv3`
   * [ImpressPages CMS](https://www.impresspages.org/) - Easy code meets easy admin. ([Demo](https://www.impresspages.org/demo), [Source Code](https://github.com/impresspages/ImpressPages)) `GPLv3`/`MIT` `PHP`
   * [Joomla!](https://www.joomla.org/) - Advanced Content Management System (CMS). ([Source Code](http://joomlacode.org/gf/project/joomla/scmsvn/)) `GPL` `PHP`
@@ -933,7 +931,6 @@ See also [Documentation Generators](#documentation-generators), [Wikimatrix](htt
 
   * [Blazekiss](http://projet.idleman.fr/blazekiss/) - BlazeKiss is a KISS-based wiki (Keep It Simple, Stupid) - simplicity and functionality comes before all. ([Source Code](https://github.com/ldleman/blazekiss))`GPLv3` `PHP`
   * [BookStack](https://www.bookstackapp.com/) - BookStack is a simple, self-hosted, easy-to-use platform for organizing and storing information. It allows for documentation to be stored in a book like fashion. ([Demo](https://www.bookstackapp.com/#demo), [Source Code](https://github.com/ssddanbrown/BookStack)) `MIT` `PHP`
-  * [Codex](http://codex-project.ninja/codex) - Codex is a simple file-based Markdown documentation platform built on top of Laravel. ([Source Code](https://github.com/codex-project/codex)) `MIT` `PHP`
   * [commonplace](https://github.com/fredoliveira/commonplace) - A server for your markdown files. Give it a directory, and Commonplace gives you a url, pretty pages, and quick editing. `Ruby`
   * [Dokuwiki](https://www.dokuwiki.org/DokuWiki) - An easy to use, lightweight, standards-compliant wiki engine with a simple syntax allowing reading the data outside the wiki. All data is stored in plain files, therefore no database is required. `GPL` `PHP`
   * [Gitit](https://github.com/jgm/gitit) - A wiki program that stores pages and uploaded files in a git repository, which can then be modified using the VCS command line tools or the wiki's web interface. ([Demo](http://gitit.johnmacfarlane.net/)) `GPLv2` `Haskell`