Fix technology, vendor and bundle names to their official notation

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | -
| Applies to    | 2.2+
| Fixed tickets | -

This PR renames all names of technologies, vendor software and bundles to their official names, following some official source, i.e. a homepage, GitHub, specification or Wikipedia:

* YAML
* Git
* Symfony Standard Edition
* XML
* PHP
* Twig
* Symfony (except when it refers to version 1)
* Subversion / SVN
* UglifyJS
* UglifyCSS
* Apache
* JavaScript
* Java
* Composer
* CSS
* Node.js
* Xdebug
* HTTP
* HTTPS
* Ajax
* IP
* ACL
* FOSUserBundle
* WSSE

It also removes literal formatting from some of them.

In addition, it removes the literal formatting from the official bundle names as this seems to be the more used standard throughout the docs and as a bundle name does not reference a piece of code or a file name etc.:

* FrameworkBundle
* FOSUserBundle
* AcmeDemoBundle
* DoctrineBundle
* DoctrineFixturesBundle
* SwiftmailerBundle
* TwigBundle
* JMSSecurityExtraBundle

Bundle names used in code samples are not affected, e.g.: AcmeUserBundle, AcmeBlogBundle, AcmeNewBundle, AcmeStoreBundle etc.

Along the way, this PR fixes some formatting issues and typos.