[DISCUSS] Harmonize Model Submitter

[Philipp Zehnder]

Hi all,

currently we have three options to implement an extension module:
        * AdapterWorkerContainer
        * ExtensionsModelSubmitter
        * StandaloneModelSubmitter

My suggestion would be to start harmonizing them into one option 
“ExtensionsModelSubmitter” and set the other options to deprecated.
I’ll create an issue and branch for this and start refactoring the modules in 
the extensions git project.

Is there anything I should keep in mind when making the changes?

Philipp