Make marker string set reality.

It is not "INSTALL TOOL START" but "INSTALL SCRIPT START".
A very small fix to translate to English.
Merge branch '3.0-translate-to-english' of https://github.com/taca/docs into 3.0
Merge branch '2.11-fix-localconfig' of https://github.com/taca/docs into 2.11
Merge branch '2.11' into 3.0
Change an example with the "tasks" module which is an extension now
Added german translation