Updated kotlin, implemented channel listings

app/build.gradle.kts

app/sampledata/channels.json

app/sampledata/libraries.json

app/src/main/AndroidManifest.xml

...ain/java/de/kuschku/quasseldroid/dagger/ActivityModule.kt

...n/java/de/kuschku/quasseldroid/ui/chat/ToolbarFragment.kt

.../quasseldroid/ui/chat/buffers/BufferViewConfigFragment.kt

...chku/quasseldroid/ui/chat/messages/MessageListFragment.kt

...de/kuschku/quasseldroid/ui/chat/nicks/NickListFragment.kt

...va/de/kuschku/quasseldroid/ui/chat/topic/TopicFragment.kt

...schku/quasseldroid/ui/chat/topic/TopicFragmentProvider.kt

...hku/quasseldroid/ui/clientsettings/about/AboutFragment.kt

...chku/quasseldroid/ui/coresettings/CoreSettingsFragment.kt

.../ui/coresettings/passwordchange/PasswordChangeActivity.kt

.../ui/coresettings/passwordchange/PasswordChangeFragment.kt

...settings/passwordchange/PasswordChangeFragmentProvider.kt

...schku/quasseldroid/ui/info/channel/ChannelInfoActivity.kt

...schku/quasseldroid/ui/info/channel/ChannelInfoFragment.kt

...asseldroid/ui/info/channel/ChannelInfoFragmentProvider.kt

...u/quasseldroid/ui/info/channellist/ChannelListActivity.kt