Fixes #107

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

.../java/de/kuschku/quasseldroid/service/BacklogRequester.kt

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

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

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

...chku/quasseldroid/ui/chat/messages/MessageListFragment.kt

...sseldroid/ui/setup/accounts/setup/AccountSetupActivity.kt

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

...va/de/kuschku/quasseldroid/persistence/AccountDatabase.kt

.../kuschku/quasseldroid/persistence/MessageTypeConverter.kt

...va/de/kuschku/quasseldroid/persistence/QuasselDatabase.kt

...ava/de/kuschku/quasseldroid/viewmodel/QuasselViewModel.kt