Added topic/realname and lag display, introduced settings structs

...java/de/kuschku/quasseldroid_ng/ui/chat/MessageAdapter.kt

...kuschku/quasseldroid_ng/ui/chat/QuasselMessageRenderer.kt

...ava/de/kuschku/quasseldroid_ng/ui/chat/ToolbarFragment.kt

...schku/quasseldroid_ng/ui/settings/data/DisplaySettings.kt

...hku/quasseldroid_ng/ui/settings/data/RenderingSettings.kt

.../kuschku/quasseldroid_ng/util/helper/LiveDataZipHelper.kt

app/src/main/res/layout/widget_chatmessage_error.xml

app/src/main/res/layout/widget_chatmessage_placeholder.xml

app/src/main/res/values/strings.xml

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

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

...main/java/de/kuschku/libquassel/session/SessionManager.kt