Fixes #12294 - Update existing params using API

Fixes #18560 - Remove searchbar from 403, change 403 style

fixes #18568 - replace deprecated AC::Parameters#update

The #update method in Rails 5 is returning a HWIA rather than the
ActionController::Parameters instance, causing keep_param to return the
wrong object type. It is also deprecated in 5.0, so replace it with a...

refs #7495 - correct syntax in API error handler

Fixes #18559 - Order mail notifications by name

Fixes #7495 - Create/delete autosign entries via API

fixes #18511 - plugin authors shown nicely

Refs #18469 - align subnet button label with the rest

Refs #18473 - align CR button label with the rest

refs #18468 - move compute_resources JS to compute profile index

The CR JS should always be ready and loaded on the compute profile
index, as the new attributes form is rendered into the existing page
after the profile is created.

Because the new attributes form is loaded via the two-pane #content...