fixes #1764 changing per_page setting would update only after a restart

this commit changes it back to an area in the code which gets evaluated
everytime instead of upon startup only

Openstack images should show foreman defined images

at least for now as long as we don't support remote
fetching of images

basic openstack support

refs #1589, ensure that vmware public key is automaticilly imported when testing connection

fixes #1729 safer migration code.

fixes #1463 - let Foreman run on a sub path

e.g. for it being available on http://localhost:3000/foreman you run:

RAILS_RELATIVE_URL_ROOT=/foreman rails s

fixes #1715 - rake puppet:import:puppet_classes[batch] stopped working

fixes #1714 allowing users with build permissions to access the submit multiple

fixes #1700 audit page performance improved

• Added auditabale name and associated name columns.
• Added username to audit table

remove references to old class names