Fixes #18952 - fix destroy of host without owner

The notifications failure caused the host not being deleted.
I don't think the notifications should interfere with the core
functionality of the objects.

fixes #18476 - users have ssh keys

Fixes #18898 - "Host" prefix isnt required on Host show page

refs #18760 - only build CSV URL from permitted params

Prevents malicious data being injected into the URL options (e.g. host)
and prevents a security exception rendering URLs with non-sanitised
params under Rails 5.0.

Fixes #18760 - Allow export to CSV

This introduces a way of exporting tables from the UI to CSV.
There are 3 steps to adding a CSV export to a table:

1. Add the CsvResponder concern to the relevant controller.
2. Add a `format.csv` block to the index controller action. This block...

Fixes #18843 - Changed from eager_load to includes in #index

Avoiding multiple joins that result in very wide result rows.
It leads to big memory footprint in the DB especially on big datasets.
This big footprint translates then into DB high CPU usage while...

Fixes #17463 - Detect user's orgs when importing from puppet

Fixes #18868 - add Parallels PSBM version handling

Fixes #18718 - Empty boolean matcher should not turn into false

Fixes #6817 - AWS VPC groups - show after saving