Fixed issue where newly created channels wouldn’t be properly initialized.

...main/java/de/kuschku/libquassel/client/BufferManager.java

app/src/main/java/de/kuschku/libquassel/client/Client.java

...assel/localtypes/backlogstorage/MemoryBacklogStorage.java

...ava/de/kuschku/libquassel/localtypes/buffers/Buffers.java

...hku/libquassel/syncables/types/abstracts/AIrcChannel.java

...uschku/libquassel/syncables/types/abstracts/AIrcUser.java

...uschku/libquassel/syncables/types/abstracts/ANetwork.java

...hku/libquassel/syncables/types/impl/BufferViewConfig.java

...e/kuschku/libquassel/syncables/types/impl/IrcChannel.java

...a/de/kuschku/libquassel/syncables/types/impl/IrcUser.java