Add colorpicker + some corrections
Added german translation for datepicker update by lionel-m
Added notDeletable DCA configuration (#16)
Replace "install.contao.org" with "download.contao.org"
Update 03-Managing-pages.md

Leerschläge Hinzugefügt bei Module
Merge branch '2.11' into 2.11-ja.
Translation for 2.11.