Fixes #13775 - merge if data set is present

Fixes #17870 - Empty boolean matcher should not turn into false

fixes #17853 - resolve ips in interface scope

Fixes #17810 - Deleting smart class parameters with puppetclass

Fixes #17858 - OpenStack scheduler doesn't show spinner

Foreman does not show the spinner when the OpenStack scheduler hints are
loading, instead it just shows a javascript error.

Fixes #17846 - auth_source_ldaps API now displays taxonomies

Fixes #17842 - Adds 'type = compute_resource' to Audit search

Fixes #17015 - Adds Key pairs controller

fixes #17838 - translate New Hosts title string

Fixes #17808 - fix 'multipart form data' IE bug

According to this bug
(https://connect.microsoft.com/IE/Feedback/Details/868498),
multipart form data is malformed if there are fields without names.
This bug has been solved within Edge browser,
however no solution is expected for IE10/IE11