* adds parcel district column for all major data objects
* adds warning about intervention-revocation on index view of compensations
* adds warning about intervention-revocation on detail view of related compensations
* adds log details for adding/removing of compensations for intervention
* adds handy restore-deleted function for admin backend for alls BaseObject derivatives
* adds/updates translations
* adds support for payment adding/deleting to intervention log
* adds support for deduction adding/deleting to intervention/ecoaccount log
* improves code snippets
* drops add_deduction() methods for ecoaccount and intervention in favor of simpler creation in NewDeductionModalForm
* adds messages
* adds/updates translations
* adds abstract is_ready_for_publish method to PublishableObjectMixin which needs to be implemented in subclasses
* adds implementation for intervention model
* adds publishable check to rendering report view
* adds/updates translations
* adds tab titles for compensations
* adds/updates translations
* optimizes identifier generating, so that one-digit months will be converted into two digits
* adds mail sending if shared data is deleted
* adds/updates translations
* refactors recording mails into separate email template folder email/recording
* moves mail sending to celery worker using shared_task in konova/tasks.py
* adds mail sending for shared access given
* adds UserNotification settings checks for mail sending
* adds/updates translations
* refactors table filters by introducing AbstractTableFilter, GeoReferencedTableFilterMixin, ShareableTableFilterMixin and RecordableTableFilterMixin
* adds full filter functionality
* refactors TableFilter inheritances for all objects
* adds celery to project
* adds celery background task for updating parcels
* adds parcel calculation to creating of new geometries as well
* tests outstanding!!!
* adds rendering for detail view
* adds new includable html snippet for parcel rendering
* refactors generic includables in konova/ app into konova/templates/includes/...
* fixes bug where parcels have been reused from the database due to wrong model structure
* adds get_underlying_parcels() for Geometry model
* adds get_underlying_parcels() for GeoReferencedMixin models
* fixes bug where missing geometry would lead to an error during geometry conflict check
* removes unused wfs attribute from AbstractWFSFetcher
* adds/updates translations
* 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
* 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 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
* 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
