Implement long message ids

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

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

lib/src/main/java/de/kuschku/libquassel/protocol/Message.kt

lib/src/main/java/de/kuschku/libquassel/protocol/QType.kt

lib/src/main/java/de/kuschku/libquassel/protocol/QTypes.kt

...uassel/protocol/primitive/serializer/MessageSerializer.kt

...sel/protocol/primitive/serializer/SignedId64Serializer.kt

...ain/java/de/kuschku/libquassel/quassel/ExtendedFeature.kt

...a/de/kuschku/libquassel/quassel/syncables/BufferSyncer.kt

...java/de/kuschku/libquassel/session/NotificationManager.kt

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

...e/kuschku/quasseldroid/viewmodel/data/FormattedMessage.kt