Update copyright headers

app/build.gradle.kts

app/src/debug/res/values-de/strings.xml

app/src/debug/res/values/colors.xml

app/src/debug/res/values/strings.xml

app/src/main/AndroidManifest.xml

app/src/main/java/de/kuschku/quasseldroid/Keys.kt

app/src/main/java/de/kuschku/quasseldroid/QuasselDroid.kt

...n/java/de/kuschku/quasseldroid/QuasseldroidGlideModule.kt

...ain/java/de/kuschku/quasseldroid/dagger/ActivityModule.kt

.../main/java/de/kuschku/quasseldroid/dagger/AppComponent.kt

...src/main/java/de/kuschku/quasseldroid/dagger/AppModule.kt

...ain/java/de/kuschku/quasseldroid/dagger/DatabaseModule.kt

...ain/java/de/kuschku/quasseldroid/dagger/SettingsModule.kt

...main/java/de/kuschku/quasseldroid/service/AsyncBackend.kt

...ain/java/de/kuschku/quasseldroid/service/QuasselBinder.kt

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

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

.../de/kuschku/quasseldroid/settings/AutoCompleteSettings.kt

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

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