Console help updates - image detail; IAM users help
Merge branch 'master' of git.eucalyptus-systems.com:documentation

# By Scot Marvin
# Via Scot Marvin
* 'master' of git.eucalyptus-systems.com:documentation:
  General cleanup from training docs and some validation fixes.
  DOC-1080: new files and edits for new architecture.
  DOC-1022: clean-up
Added image detail console help page
More console updates - created image detail help page.