* DEV: Sanitize HTML admin inputs
This PR adds on-save HTML sanitization for:
Client site settings
translation overrides
badges descriptions
user fields descriptions
I used Rails's SafeListSanitizer, which [accepts the following HTML tags and attributes](018cf54073/lib/rails/html/sanitizer.rb (L108))
* Make sure that the sanitization logic doesn't corrupt settings with special characters
When overriding the translation for i18n keys used in user notifications
like user_notifications.reply_by_email, errors were returned for
valid interpolation keys. Keys like topic_title_url_encoded are
supported, so no error should be raised.
https://meta.discourse.org/t/-/50305/7
This change both speeds up specs (less strings to allocate) and helps catch
cases where methods in Discourse are mutating inputs.
Overall we will be migrating everything to use #frozen_string_literal: true
it will take a while, but this is the first and safest move in this direction
* Our codebase currently supports custom interpolations keys that are
not present in the original translation. The proper fix should
be to make `TranslateOverride` aware of such keys.
