Further performance improvements

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

...java/de/kuschku/libquassel/quassel/syncables/DccConfig.kt

.../java/de/kuschku/libquassel/quassel/syncables/Identity.kt

...ava/de/kuschku/libquassel/quassel/syncables/IrcChannel.kt

...n/java/de/kuschku/libquassel/quassel/syncables/IrcUser.kt

...n/java/de/kuschku/libquassel/quassel/syncables/Network.kt

.../de/kuschku/libquassel/quassel/syncables/NetworkConfig.kt

...ain/java/de/kuschku/libquassel/session/ProtocolHandler.kt

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

...rc/main/java/de/kuschku/libquassel/session/SignalProxy.kt