Revert "Merge branch 'master' of github.com:chrys87/fenrir"

This reverts commit 2ce5adba82, reversing
changes made to bf807c2519.

docu/user.txt

@@ -1273,7 +1273,7 @@ Commands are python files with a special scheme. You can assign them to a shortc
 Good Examples: [[https://github.com/chrys87/fenrir/blob/master/src/fenrir/commands/commands/date.py|"date.py"]] (announce the Date), [[https://github.com/chrys87/fenrir/blob/master/src/fenrir/commands/commands/shut_up.py|"shut_up.py"]] (interrupt output)
 the basic scheme for a command is as follows:
 
-  from fenrir.core import debug
+  from core import debug
   
   class command():
       def __init__(self):