Update images for the chapter 2 and 5 (Contao 3.0)
Update images chapter 5 (Contao 3.0)
Modifications for better readability
Github import update
Fixed postLogin and postLogout hook, they are also triggered in the backend!
Added german translation
Merge branch 'github-update' into 3.0
Merge branch 'managing-content' into 3.0
Merge branch 'chapter-5-images' into 3.0
Dahunter -> Darunter
Merge branch 'images-updated-3.0' into 3.0
Revert "Update images chapter 5"

This reverts commit cf30b08476039a70692dc95675c8adb135ee0a79.
Merge branch 'chapter-5-images-3.0' of https://github.com/lionel-m/docs into 3.0
Merge branch '3.0' of https://github.com/lionel-m/docs into 3.0
Merge branch 'playground-custom-module-update' of https://github.com/lionel-m/docs into 3.0
Update 03-Managing-pages.md

403-/404-Seiten müssen im Root angelegt werden!
Improved 404 and 403 descriptions according to discussion in #63
Merge branch '3.0' into 3.1