Properly handle disconnecting and connecting automatically

app/src/main/AndroidManifest.xml

...java/de/kuschku/quasseldroid_ng/service/QuasselService.kt

...n/java/de/kuschku/quasseldroid_ng/ui/chat/ChatActivity.kt

...n/java/de/kuschku/quasseldroid_ng/ui/chat/ChatDelegate.kt

...va/de/kuschku/quasseldroid_ng/ui/chat/ChatListDelegate.kt

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

...va/de/kuschku/quasseldroid_ng/ui/chat/NickListDelegate.kt

.../quasseldroid_ng/ui/setup/accounts/AccountEditActivity.kt

...seldroid_ng/ui/setup/accounts/AccountSelectionActivity.kt

...quasseldroid_ng/ui/setup/accounts/AccountSetupActivity.kt

...a/de/kuschku/quasseldroid_ng/util/AndroidHandlerThread.kt

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

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

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

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

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

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