* renames model ResponsibilityData into Responsibility
* renames model LegalData into Legal
* moves form->object saving logic into model
* refactors NewDocumentForm into special types for intervention, compensation, eco account and ema
*
* 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
* adds NewEcoAccountForm
* refactors NewCompensationForm into AbstractCompensationForm so main fields can be reused again
* fixes template bug in account detail view where the amount of deductions has been displayed instead of the available rest
* refactors _generate_new_identifier() into generate_new_identifier()
* refactors get_available_rest() into returning both, the total and relative amount
* improves saving of SimpleGeometryForm()
* adds/updates translations
* introduces bootstrap class form-control for proper html form input rendering
* fixes bug where missing shared users for an entry resulted in a None exception
* adds GenerateInput with template in generate-content-input.html, which provides a generate button for fetching server-side content
* adds/updates translations
