Refs #17972 - remove trends.js from assets initializer

Fixes #17998 - Only print LDAP bind status if available

The ldap logger tries to call payload[:bind].status but it might not be
defined if the bind goes wrong in some LDAP sources.

This causes a 500 instead of logging the status of the bind. We should
only display payload[:bind].status if it's available.

fixes #8290 - remove foreman_url redundancy

Fixes #17678 - APIdoc - URL desc add missing CR types

refs #17257 - remove interpolation from extracted string

fixes #16459 - remove 1.15 deprecations

Fixes #12156 - Adds email configuration into Foreman settings

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

Fixes #13424 - c3 patternfly react implementation

Fixes #9016 - improved fact loading performance

This change improves fact loading performance by order of magnitude on
SQLite mostly thanks to explicit transaction. An extra optimization was
done for the most important "update" method call which is mostly used...

Fixes #16566 - Allow css inline images

Secure headers currently prevents inlining images in CSS using the
'data:' method. This commit adds that to the allowed image sources.