Keyboard Layouts for terminal-app in 16.04-OTA5

[guru]

In Canonicals UT and in UBports OTA3 I used may own Keyboard layout tweakings for function keys etc. Details can be found here:
https://gurucubano.gitbooks.io/bq-aquaris-e-4-5-ubuntu-phone/content/en/chapter12.html .

Of course, their location are now not any longer at the same place. I poked a bit around and create as I wild guess a new directory and copied the files to there:

mkdir ~/.config/ubuntu-terminal-app/Layouts
cp -p BashKeys.json MuttKeys.json NetworkCommands.json ~/.config/ubuntu-terminal-app/Layouts

The original files of the terminal-app are in:

ls -l /usr/share/click/preinstalled/com.ubuntu.terminal/0.9.0/qml/KeyboardRows/Layouts
-rw-r--r-- 1 clickpkg clickpkg  846 Jul  3 15:26 ControlKeys.json
-rw-r--r-- 1 clickpkg clickpkg 1715 Jul  3 15:26 FunctionKeys.json
-rw-r--r-- 1 clickpkg clickpkg 1988 Jul  3 15:26 Nano.json
-rw-r--r-- 1 clickpkg clickpkg 1841 Jul  3 15:26 ScrollKeys.json
-rw-r--r-- 1 clickpkg clickpkg 2156 Jul  3 15:26 SimpleCommands.json

and the syntax has slightly changed, but my old files do fine.

Is there any documentation about the new terminal-app and its configuration?