Crowdin recreates YAML files with indent specifications which Spyc does not
currently handle:

body: |2
  body contents written
  here with 2 leading spaces

This is part of the Yaml spec after 1.0

backportme

Also add a drop-down list of common links include ticket links and login
pages for both agents and end users.

Also fix redactor translation for SCP

Add other locations as well a failsafe for the htmlentities() call

Previously, the characters would be removed and the data would be considered
empty which would bypass validation and clear the phone number on save
rather than triggering a validation error.

Also add a slight performance optimization for untranslated (en_US) help
desks

References:
(Requires Crowdin login)
http://i18n.osticket.com/translate/osticket-official/148/enus-de#3411

Send an empty return-path envelope when sending out system alerts. If they
should happen to bounce for any reason, they should not return to the system
and create tickets.

Previously, osTicket introduced the ability to cascade defaults for the
department and priority to the email mail boxes. However, the validation
checks and display fall-backs were never added.

This patch fixes an issue where a fatal error would be triggered if the
current value of a selection field on a custom form was a custom list item
that has since been deleted.

The PHP.ini default is 1440 seconds (24 minutes). This should be configured
to something significantly higher so that the settings in the admin panel
concerning session timeouts are relevant.

Ideally, the settings from the control panel would be used, but currently
there is an inter-dependency between session and config startups.

Also add some logic to the POT builder to warn about incorrect arguments to
the __() function and friends as well as warn about _() usage.

References:
(Requires Crowdin account)
http://i18n.osticket.com/translate/osticket-official/148/enus-de#3852

Names parsed from incoming emails are stored in the database as is. This
pull request addresses potential XSS vulnerability due to improper display
of unsanitized names. Going forward names will be scrubbed on create.