Community-Lab introduction

Differences From Artifact [359e502fb0]:

• File slides.svg — part of check-in [9043376392] at 2012-09-22 16:26:04 on branch trunk — Shorten node arch zoom titles to "Node arch:". (user: ivan, size: 670937) [annotate] [blame] [check-ins using]

To Artifact [e5a40fec9e]:

• File slides.svg — part of check-in [6f31c22938] at 2012-09-23 08:38:11 on branch trunk — New transition to node arch diagram, rename slices/slivers/nodes slide. (user: ivan, size: 671538) [annotate] [blame] [check-ins using]

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