* fixed canonical link from index
* added http redirect from builder/basics
* fixed url in redirect_home
Upstream-commit: 73afc6311daf6bce10d081352aa1efbfcb406d10
Component: engine
* replaced previously removed concepts/containers and concepts/introcution by a redirect
* moved orphan index/varable to workingwiththerepository
* added favicon to the layout.html
* added redirect_home which is a http refresh redirect. It works like a 301 for google
* fixed an issue in the layout that would make it break when on small screens
Upstream-commit: 3491d7d2f11246ba4067708a3c5336ba21da4767
Component: engine
* Moved the introduction page to the en/latest/index.html home of the documentation and pointed all links there
* Fixed a broken link from+to homepage
* Fixed the javascript of the documentation navigation to allow expand and collapse multiple times.
* Fixed the one typo Andy pointed out
Upstream-commit: 8454a86e9733b3eddc6dcd5583bef58785a550d7
Component: engine
