* fix(plex): do not fail to import Plex users when Plex Home has managed users
* fix: default display name to email when user has no username
also, do not set username or plexUsername when it is the same as the user's email address
* fix(ui): user display name placeholder should reflect fallback logic if username is not set
* fix(ui): hide email addresses of other users if logged-in user does not have Manage Users permission
* fix: always set Plex username even if same as user's email
* fix: remove unnecessary permission check
* fix: transform email addresses to lowercase
* feat(lang): add Greek & Polish display languages
Also:
* rename zh-TW display language to 繁體中文
* fix plurality of AvailableLocale type name
* consistently use 'en' as fallback/default language
* revert(lang): remove Polish display language due to lack of translation activity
* feat(plex): add support for custom Plex Web App URLs
* refactor: clean up Yup validation in *arr modals & email settings
* fix(lang): change Web App URL tip
* fix: remove web app URL validation and add 'Advanced' badge
* fix(locale): default user locale should be the server setting
* fix(db): fix user settings migration
* fix(db): set default locale to empty string
* revert: revert change to usersettings.ts
* fix: correctly fall back to English name in LanguageSelector
* refactor: clean up language sort & name logic
* refactor: also clean up region sort & name logic
* refactor: use arrow functions
* fix: set editRequest attribute for RequestModal
* fix: remove now-unneeded conditional
* fix(ui): only show 'View Request' for user's own requests if they don't have MANAGE_REQUESTS perm
* fix(ui): show edit button on request list for own requests & 'View Request' button on series pages
* fix(ui): do not show 'Request More' if user already has a pending request
* fix: address PR comments
* fix(lang): edit usercreatedfaileexisting string & generate translation key
* fix: users should always be able to view/edit their own requests even if their perms have changed
also fixed capitalization of 'Signing In...' string
* fix(notif): include year in notifications
* fix(lang): fix shared overwritten strings
* fix: check if email agent is actually enabled when generating passwords
* refactor(ui): add tabs to user notification settings
* feat(notif): allow users to enable/disable specific agents
* fix(ui): only enforce required fields when agent is enabled
* fix(ui): hide unavailable notification agents
* feat(notif): mention admin users for admin Discord notifications
* fix(ui): modify styling of PGP key textareas to suit expected input
* fix(notif): mention all admins when there are multiple and fix rebase error
* fix: add missing form values, and fix Yup validation
* refactor: reduce repeated logic/code in email notif agent
* refactor: move 'Notification Types' label into NotificationTypeSelector component
* fix(email): correct inconsistencies in email template formatting
* refactor: use bitfields for storing user-enabled notif agent types
* feat: improve notification agent logging
* fix(ui): mark string fields as nullable so empty values are not type errors
* fix: add validation for PGP-related inputs
* fix: correctly fetch user in user settings & log mentioned IDs for Discord notifs
* fix(ui): fix mobile nav dropdown text & add hover effect to button-style tabs
* fix(notif): process admin email notifications asynchronously
* fix(logging): log name of notification type instead of its enum value
* fix: mark required fields and pass all user settings values to API
* fix(frontend): call mutate after changing email/Discord/Telegram global notif settings
* refactor: get global notif settings from relevant API endpoints instead of adding to public settings
* fix(notif): fall back to email notifications being enabled (default) if user settings do not exist
* fix(notif): do not set notifyUser for MEDIA_PENDING or MEDIA_AUTO_APPROVED
* fix: expose notif enabled settings in user notif endpoints & remove global enable notif setting
* fix(notif): remove unnecessary allowed_mentions object from Discord payload
* fix(notif): use form values for email test notification
* fix: make suggested changes and regenerate DB migration
* fix: loosen validation of PGP keys
* fix: fix user profile settings routes
* fix: remove route guard from profile pages