Fixes #17516 - Update jquery to 2.2.4 to fix XSS

Affected versions of the package (< 1.12) are vulnerable to Cross-site
Scripting (XSS) attacks when a cross-domain ajax request is performed
without the dataType option causing text/javascript responses to be...

fixes #17630 - show tooltips after deselecting selected item

For example,
User who must be the owner of that host, is having
an organization which is assigned to the same host
then on edit page, you will see tooltip on that organization
hover saying "This is used by host"....

Fixes #17570 - Only execute `onContentLoad` once per page

When an event is triggered, jQuery attempts to execute the on<name>
method if it exists for event <name>. We were also manually triggering
the `onContentLoad` every time the `ContentLoad` event was triggered,...

i18n - extracting new, pulling from tx

Fixes #12156 - Adds email configuration into Foreman settings

Instead using email.yaml, the email configuration
can be modified dynamically via settings.

Fixes #15287 - Correct link from puppet proxy dashboard chart

Fixes #17501 - Display tooltips on dashboard widgets (#4067)

Fixes #1556, #11615 - Remove puppet rdoc support

Puppet rdoc support has been broken for a long time. Removing it from
Foreman.

Fixes #17303 - correct position of validation msg for parameters

Fixes #17334 - change password strength messages to imply warning