Fixes #16159 - Rename mail alerts to not be Puppet specific

Right now, under 'my account', users get emails with alerts about the
status of their hosts regarding configuration management (e.g: if there
was an error, get an alert, or get a weekly summary of all hosts...

Fixes #19296 - Combination remove link shows correct tooltip

Fixes #19384 - Add tooltip to the Remove Matcher button

fixes #19479, #10587, #19500 - two pane notifications are visible

- notification is now inside the content div, allowing two-pane server
responses to include it.
- refactored all notifications to use notification helpers (notice,
warning and error) instead of direct flash manipulation...

fixes #19476 - list features in smart proxy refresh API response

templates - sync from community-templates

fixes #14178 - introduce patternfly toast notifications

- replaces old jnoitfy with react implementation.
- Adds a notification store to handle events from
rails flash + legacy javascript Notice function and expose
an Action API to add notifications.

Fixes #19436 - Better controller selection on host dropdown (#4498)

Always setting to `host` unless the controller is `hostgroup` broke
discovery's usage of the form as it uses the `discoverd_host`
controller.
This reverts the change from `method_path` to `host_or_hostgroup_path`...

Fixes #19427 - sort by report time is possible

Fixes #19125 - Add description to hostgroup