Engine: org-switcher: updates to support working within engine

This commit contains several changes needed to enable the
org-switcher to work properly within the katello 'as an engine'.
Engine: updating engine install readme
Merge pull request #3327 from komidore64/engine

Engine: updating engine install readme
Engine: Fixing content view tests refs #3585
Merge pull request #3325 from daviddavis/temp/20131106092704

Engine: Fixing content view tests refs #3585
Merge pull request #3310 from bbuckingham/engine-org_switcher

Engine: org-switcher: updates to support working within engine