Fixes #11709 - better error for DNS conflict timeouts

Fixes #7167 - names of settings marked for translation

Fixes #8566 - reorganized settings categories

Fixes #10194 - help text for token_duration setting

Refs #3809 - Remove cops for empty lines

Fixes #9104 - allow disabling of interface updates

Fixes #9059 - adds puppetssldir setting

Fixes #7994 - increased default token_duration setting

fixes #3601: Use secure websockets if available

Websockets_ssl* settings must be configured with the appropriate
certificates for this to work.

fixes #3946 Set host URLs from local settings file, if no Facter configuration exists. Add default values for settings example.

Fixes #4679 - Downcase fqdn to match Puppet SSL certs casing

fixes #4626 - update Facter calls for 2.0 compatibility

fixes #4270 - setting descriptions updated for consistency

fixes #3725, #4167 - root password validations, remove default password

Fixes #3569, #3210 - Use port from foreman_url for templates

Fixes #3196 - Switch tokens to default to on

fixes #3241 - default password is now MD5

fixes #2975 added setting for using the shortname instead of FQDN for new virtual machines

Fixes #3030 - require facter where necessary

Refs #2414 - Remove Puppet from facts API and Settings

Reports are still in progress and will come in a later PR
DB schema is updated to not need puppet/rails

Fixes #2576 - Add optional update of Host.ip from built request

fixes #2751 - Remote addr can support several load balancers

fixes #2660 - settings, improve tests and fixes

- added string settings type
- fixed tests previously commented out due to CI failures
- more tests for core settings functionality
- parsing of string values enhanced and extracted to a separate method
- setting value to nil when it equals default is back...

fixes #2562 libvirt domain listen address, add libvirt_default_console_address setting

fixes #2407 - Add STI to settings model

Also adds some tests for rendering new/missing STI models, and
refactors the old default_settings loader into the new sub-models.