[Grok-dev] I suggest dropping these two tutorials

[Sebastian Ware]

JW has migrated 

    http://grok.zope.org/doc/community/tutorials/musical_performance_organizer/index.html

and noted that it was pretty extensive. All tutorials will probably need some editing to make them compatible with Grok 1.3 therefor I suggest we drop these two:

    Adder: an adding machine sample application
    Grok Poller Tutorial

and focus out collective effort on the previous one.

Mvh Sebastian