Added a lot of chat view related code

app/src/main/AndroidManifest.xml

app/src/main/java/de/kuschku/libquassel/BusProvider.java

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

app/src/main/java/de/kuschku/libquassel/CoreConnection.java

...de/kuschku/libquassel/backlogmanagers/BacklogManager.java

...chku/libquassel/backlogmanagers/SimpleBacklogManager.java

...va/de/kuschku/libquassel/events/BacklogReceivedEvent.java

.../java/de/kuschku/libquassel/localtypes/ChannelBuffer.java

...in/java/de/kuschku/libquassel/localtypes/QueryBuffer.java

...n/java/de/kuschku/libquassel/localtypes/StatusBuffer.java

app/src/main/java/de/kuschku/libquassel/message/Message.java

...a/de/kuschku/libquassel/primitives/QMetaTypeRegistry.java

.../libquassel/primitives/serializers/MessageSerializer.java

...va/de/kuschku/quasseldroid_ng/ClientBackgroundThread.java

.../main/java/de/kuschku/quasseldroid_ng/QuasselService.java

.../java/de/kuschku/quasseldroid_ng/ui/BufferDrawerItem.java

...va/de/kuschku/quasseldroid_ng/ui/ChatMessageRenderer.java

...main/java/de/kuschku/quasseldroid_ng/ui/MainActivity.java

...in/java/de/kuschku/quasseldroid_ng/ui/MessageAdapter.java

...java/de/kuschku/quasseldroid_ng/ui/MessageViewHolder.java