Fixes #17403 - enable exporting of templates

Fixes #17200 - Add option datacenter to compute resource

Fixes #16646 - Add ability to plugins to modify index scope

Fixes #16962 - Typo on domains welcome page

Fixes #6492 - ipmi_boot permission renamed to ipmi_boot_hosts

Authorizer expects permission names to follow a convention
'action'_'controller'. However this permission was not following it, and
this prevented the permission from being applied properly.

Before this fix, only admins could call ipmi_boot. I've also added a...

Fixes #16813 - improve error messages for associations

fixes #16725 - add plugin extension point for smart proxies

Fixes #14277 - Added description field to users

Fixes #15926 - [API] Add method to get ENC values of a host

Fixes #16114 - Expose host parameters to GET /api/hosts