Beta.14 Upgrade Guide

[franzliedke]

Let's collect breaking changes here so that it's easier to compile the Upgrade Guide before the release:

• Extract NotificationList state #2185
• Don't store checkbox instances in NotificationGrid #2183
• Remove app.search instance, cache app.cache.searched #2151
• Move Discussion List State into its own class #2150
• Clean up app.current, app.previous in JS #2156
• Extract Alert State, AlertManagerState #2163
• Extract modal state #2162
• Extract Composer state #2161
• Switch from 'moment' to 'dayjs' #2219

Deprecations:

• Deprecate AssertPermissionTrait #2044
• Inject Url Generator and Translator Interface into notification mailer #2169

Warnings to users

• No more laravel helpers
• Symfony translator interface should be used, not Laravel's
• Do NOT use the old callback notation for configuring view namespaces. This will break all extensions that boot after your extension. The view extender must be used.