There was a lot of locale handling to get correct/expected date
formatting within the app.
Carbon now has built-in locale content rather than us needing to target
specific system locales.
This also removes setting locale via Carbon directly.
Carbon registers its own Laravel service provider which seems to
accurately pull the correct locale from the app.
For #4555
- Reduced app settings down to what's required.
- Used new view-shared $locale object instead of using globals via
config.
- Aligned language used to default on "locale" instead of mixing
locale/language.
For #4501
- Moves guest user caching from User class to app container for
simplicity.
- Updates test to use simpler $this->users->guest() method for
consistency.
- Streamlined helpers to avoid function overlap for simplicity.
- Extracted user profile dropdown while doing changes.
- This ensures content notifications are not translated to receiver
language.
- This adds actual plaintext support for content notifications (Was
previously just HTML as text view).
- Shares same base class across all mail notifications.
- Also cleaned up existing notification classes.
Future cleanup requested via #4501
Updated language system to only use initial part of locale for
translation pluralisation to better match the hard-coded logic of the
built-in MessageSelector. Extends and overrides Laravel's default for
this system.
Added test to cover.
Related to #3976.
System was using the empty state return from theme_path,
when no theme was configured, for loading in languages
which would result in the root path being looked up upon.
This changes the theme_path helper to return null in cases a theme
is not configured instead of empty string to help prevent assumed
return path will be legitimate, and to help enforce error case
handling.
For #2836
Was no longer needed due to only being there to perform
language extension for de_informal but now this is done by crowdin
instead so it's redundant. Same goes for checking and formatting
scripts.
Also removed comment advising deletion form settings.php language list
since this is now auto-copied to languages anyway.
Related to #1261
Extended the base Laravel translation system to
allow a locale to be based upon another.
Also adds functionality to take base & fallback locales into account when fetching
an array of translations.
Related to work done in #1159
