Update docs/manual/en-US/chapters/packages/data.md
Merge pull request #1788 from elinw/patch-13

Fix typos
Add missing argument to JAccess::checkGroup in rules.php
avoid include_once when we are sure the class doesn't exist
"Content-Disposition" is stored directly in the headers array

Since the function now uses "JHttpFactory::getHttp()" instead of "stream_get_meta_data", the "Content-Dispositon" data is now stored directly in the $response->headers['Content-Disposition'] instead of $response->headers['wrapper_data']['Content-Disposition'].

Currently in Joomla 3.0.2, you can't install extensions directly from an URL if the URL points to a dynamic created link (like in Akeeba Release System or CTransifex). This is because it doesn't detect a valid filename.
This commit fixes this.
Update composer vendor-dir and bin-dir to match JPlatform locations of libraries and bin
Fix a problem where using a non-string value for path caused all files to be deleted.
Add JFeed chapter to manual
Merge pull request #1792 from elinw/rules

Add missing argument to JAccess::checkGroup in rules.php
Merge pull request #1806 from elinw/feeds

Add JFeed chapter to manual
Merge pull request #1798 from elinw/jfolderdelete

Fix a problem where using a non-string value for path caused all files t...
Merge pull request #1794 from florianv/once

Avoid include_once when we are sure the class doesn't exist
Merge pull request #1796 from dongilbert/composer

Update to composer.json
Use 'load_language' property as a flag to load the language files so that the constructor doesn't need to be overridden for this purpose.
Use camel case
Change to 'autoloadLanguage'
Add token based authentication to JGithub
Add JGithubUsers
Merge pull request #1813 from elkuku/github-users

Add JGithubUsers
Fix unit tests for JGithubUsers (Ref #1813)