a few cleanups#1

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gammons wants to merge 4 commits intowizardwerdna:masterfrom

Commits on Dec 13, 2012

remove unused dependency on pg
Grant Ammons
committed
page inherites from entities
Grant Ammons
committed
fix require for pages_spec, so it can be run on its own
Grant Ammons
committed
remove dependency on pg for the z_rails app
Grant Ammons
committed