Add config app for plugin model+fixes#1574

jochenklar wants to merge 8 commits intoadd-config-app-for-plugin-modelrdmorganiser/rdmo:add-config-app-for-plugin-modelfrom

add-config-app-for-plugin-model+fixesrdmorganiser/rdmo:add-config-app-for-plugin-model+fixesCopy head branch name to clipboard