Minor fixes, updated dependencies

app/build.gradle.kts

.../java/de/kuschku/quasseldroid/settings/MessageSettings.kt

...rc/main/java/de/kuschku/quasseldroid/settings/Settings.kt

...u/quasseldroid/ui/chat/messages/QuasselMessageRenderer.kt

app/src/main/res/values-de/strings_preferences.xml

app/src/main/res/values/strings_preferences.xml

app/src/main/res/xml/preferences.xml

lib/build.gradle.kts

persistence/build.gradle.kts

slidingpanel/build.gradle.kts

viewmodel/build.gradle.kts