* finishes egon compatible (tested) data export
* moves egon export into celery process
* adds export of data in case of intervention recording
* adds _RABBITMQ_ settings for intervention/settings.py
* adds new dependency for requirements.txt
* adds EditEcoAccountForm
* adds placeholders for some form fields
* changes comment card in detail view into rlp-grayish
* adds eco account detail view comment box
* removes unnecessary loading of dal scripts in view.html
* refactors generated identifier for data objects (10 digits to 6 uppercase letter-digit combination)
* improves generate_random_string() method by adding more options for generation of strings
* adds/updates translations
