fixes #1610 - exdception in the ui when editing a deleted vm.

fixes #1609 - REST API calls /hosts/:id/puppetclasses fails for hosts with same class assigned directly and through host group

fixes #1606 - foreman returns to main screen after session expiry

refs #1503, ensures that puppet proxy is not required if you are not provisioning

UI fixed error in provisioning template, edit page.

fixes #1603 - Login Screen improvments

UI - more explicit button description for the add child node.

fixes #1595: show success on test connection

Added css class "btn_success" to the test connection button when the connection
is successful.

This still leaves behind a problem with ec2 (and probably rhev and vmware) where
testing the connection resets the selected region (or, datacenter for rhev and...

Fixes #1596 Add back button of console page.

fixes #1600 - records are deleted even though host is not Managed