* changes the autocomplete route for user retrieving from _istartswith to full qualified check
* extends the help text for form to inform about full qualified username needed
* updates translation
* adds file mime type check on NewDocumentForm
* adds file size check on NewDocumentForm
* adds is_xy_valid methods as classmethods on AbstractDocument
* adds translations for error messages
* updates help text on NewDocumentForm file field
* moves updating of shared access users into ShareableObjectMixin
* renames ShareInterventionModalForm to ShareModalForm since it's used for EMA and eco accounts as well
* 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
*
* implements 5) "Add 'Maßnahmentyp' for KOMs "
* prepares model and form fields as mixins for easy extension to eco accounts and emas (possibly in the future?)
* adds tests for compensations (WIP)
* refactors some dummy data generating into base test class
* fixes bugs detected by testing
* adds important requirements.txt change for itsdangerous package (<1.0.0 for compatibility to django-simple-sso)
* refactors CheckableMixin and RecordableMixin into CheckableObject and RecordableObject
* adds ShareableObject for wrapping share related fields and functionality
* adds share functionality to EcoAccount and EMA, just like Intervention
* adds quality check logic for EcoAccount with EcoAccountQualityChecker
* adds/updates translations
* adds quality check logic for EMA with EmaQualityChecker
* adds AbstractQualityChecker as base for all quality checker instances
* adds InterventionQualityChecker, inheriting from AbstractQualityChecker
* adds functionality to InterventionQualityChecker
* adds/updates translations
* refactors: attached files can only be downloaded by users with shared access
* adds hint on unshared data being unshared for compensation, ema, eco-account
* minor optical enhancement for user contact form
* adds index form for selecting timespan and office of interest
* adds timespan support for TimespanReport
* fixes naive datetime issues
* fixes missing error message css tag
* adds/updates translations
* optimizes the db fetching for all index views and detail views
* introduces usage of managers.py in all necessary apps for wrapping basic fetch settings
* moves comment.html to comment_card.html under /konova/templates/konova/
* adds/updates translations
* fixes document typos
* drops comment rendering in public reports
* opens public reports in new tabs if button is clicked from the detail view
* adds public report rendering for intervention model
* adds new routes for report
* adds new public_base.html and public_navbar.html
* adds lookup table for zoom levels for lanis link generating
* moves qr code generating into utils/generators.py
