* fixes created timestamp in detail views where modified needs to be displayed
* adds fallback timestamp if data has not been edited, yet --> show created timestamp
* fixes bug where deleting of certain data didn't redirect to the index view
* adds quality_check() method for EMA, needed for recording
* adds all functions which are provided for compensations to EMA
* adds/updates translations
* adds Ema model (basically Compensation inherited)
* adds index view for EMAs
* fixes drop-down link bug for menu 'More' in navbar
* refactors some more forms to use process_request()
* adds modified attribute to BaseResource for easy last_modified check
* adds setting of modified attribute in all places where UserAction.EDITED is added to log
* adds EMA_ACCOUNT_IDENTIFIER_LENGTH and EMA_ACCOUNT_IDENTIFIER_TEMPLATE to ema/settings.py
* adds EmaAdmin to ema/admin.py
* fixes wrong title in intervention detail view html for revocations
* adds support for subtitle variable to BaseTable and generic_index.html
* drops next_version attribute from models
* adds/updates translations
* adds default ordering for UserActionLogEntry
* removes extra ordering in log modal rendering
mipel