Fixes #37039 - Honor permissions and taxonomies for host statuses

Fixes #36869 - update hosts path with current_hosts_path

Fixes #36711 - Fix searching in settings

Fixes #29939 - drop category column from settings

Settings table was holding category column to support old style of
settings, but it is now ready to be decomissioned as plugins were given
enough time.

Fixes #34866 - Settings - Like operator for name

• Allow ~ operator for name
• Fix issue with double quote in search
• Raise exception for unsupported operators :and / :or

Fixes #30861 - keep setting collections in registry

Move Setting collection registry into the setting registry.

Refs #34323 - explicit value for Rails 6.1

In c693cd9 we have worked around an issue for distinguishing between value explicitly set by user and not set.
This workaround doesn't work properly in Rails 6.1 and we should improve it to work properly.

Fixes #34328 - GraphQL use directly SettingRegistry

GraphQL was reading the settings from DB, but now we have the registry, it needs to read it from there instead.

Mutation needs to set the value through the SettingRegistry as well.

Fixes #34323 - use defaults from memory

This loads values from database only if the values are in the database.
If there is no value populated for the Setting, we want to read the default from memory.

Fixes #33935 - Cache setting categories

Every call to `@settings.category` in the index page recalculates all
the category names and labels by iterating over all settings. Since the
categories can't change in runtime, we can calculate it once and store
the list on the settings registry. We can also get the label once per...