Upgraded to AndroidX

app/build.gradle.kts

...java/de/kuschku/quasseldroid/dagger/ActivityBaseModule.kt

...uschku/quasseldroid/service/QuasselNotificationBackend.kt

...in/java/de/kuschku/quasseldroid/service/QuasselService.kt

...u/quasseldroid/service/QuasseldroidNotificationManager.kt

...va/de/kuschku/quasseldroid/settings/AppearanceSettings.kt

...kuschku/quasseldroid/settings/SettingsMigrationManager.kt

app/src/main/java/de/kuschku/quasseldroid/ssl/X509Helper.kt

...main/java/de/kuschku/quasseldroid/ui/chat/ChatActivity.kt

...a/de/kuschku/quasseldroid/ui/chat/ChatFragmentProvider.kt

...n/java/de/kuschku/quasseldroid/ui/chat/ToolbarFragment.kt

...kuschku/quasseldroid/ui/chat/buffers/BufferListAdapter.kt

...u/quasseldroid/ui/chat/buffers/BufferViewConfigAdapter.kt

.../quasseldroid/ui/chat/buffers/BufferViewConfigFragment.kt

.../quasseldroid/ui/chat/info/channel/ChannelInfoFragment.kt

...droid/ui/chat/info/channel/ChannelInfoFragmentProvider.kt

...e/kuschku/quasseldroid/ui/chat/info/core/ClientAdapter.kt

...uschku/quasseldroid/ui/chat/info/core/CoreInfoFragment.kt

...uasseldroid/ui/chat/info/core/CoreInfoFragmentProvider.kt

...uschku/quasseldroid/ui/chat/info/user/UserInfoFragment.kt