Fixed issue where unhiding buffers would sort them wrongly

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

.../quasseldroid/util/ui/presenter/BufferContextPresenter.kt

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

.../kuschku/libquassel/quassel/syncables/BufferViewConfig.kt

...kuschku/libquassel/quassel/syncables/BufferViewManager.kt

lib/src/main/java/de/kuschku/libquassel/session/Session.kt

...de/kuschku/libquassel/integration/BufferViewConfigTest.kt

...u/quasseldroid/viewmodel/helper/ArchiveViewModelHelper.kt

...chku/quasseldroid/viewmodel/helper/ChatViewModelHelper.kt

...u/quasseldroid/viewmodel/helper/QuasselViewModelHelper.kt