* extends BaseModalFormView to hold general logic for processing GET and POST requests for BaseModalForm endpoints
* refactors uuid check to use a specific parameter instead of kwargs
* fixes css bug where modal form input elements would not be visible
* refactors check view for intervention from function to class
* refactors DeductionViews to inherit from extended BaseModalFormView
* refactors new and edit eco account views from function to class based
* removes info message if checked intervention is altered and loses the current checked state
* updates comments/documentation
* removes code duplicates
* fixes display error where modal form was hidden behind menu bar of map client
* fixes bug where compensation could not be created directly from intervention
* refactors new and edit compensation views from function to class based
* adds checked property to compensation to return parent-intervention's checked info
* fixes bug where compensation could be added to recorded intervention
* updates translations
* refactors views for new ema and edit ema from function to class based
* moves shared access check to base edit form view to be checked for every inheriting class
* fixes bug where private variables changed on singleton objects
* updates translations
* introduces BaseDetailView
* refactors detail views for EIV, KOM, OEK, EMA from function based to class based
* refactors already class based HomeView to inherit from new BaseView
* refactors function based report views into class based for EIV, OEK, EMA, KOM
* introduces BaseReportView for proper inheritance of shared logic
* refactors generating of qr codes into proper class
* refactors deduction views on interventions and eco accounts from function to class based
* introduces basic checks on shared access and permission on BaseView on dispatching --> checks shall be overwritten on inheriting classes
* refactors majority of user views into class based views
* introduces BaseModalFormView and BaseView for even more generic usage
* renames url identifier user:index into user:detail for more clarity
* fixes bug where errors on geometry form were not rendered properly
* fixes bug where invalid geometry was written as read-only back into form (could not be corrected by user)
* adds explanatory comments to SimpleGeomForm is_valid() checks
* reorders code snippets for better understanding
* adds correcting logic to _set_geojson_properties() in case of missing properties element
* fixes bug on netgis map client where importing a geometry would result in an error message
* THIS IS JUST A WORKAROUND AND HAS TO BE REPLACED BY A PROPER FIX FROM THE DEVS ASAP
* changes SimpleGeomForm behaviour on small geometries (<1m²): These geometries will now be dismissed on processing
* adds a new info message in case of automatically removed geometries on saving
* updates tests
* adds sso_identifier as new User model attribute
* refactors minor code snippets on user-propagation data resolving
* adds updating of username based on propagation data
* adds sso_identifier on admin backend view
* (potentially) fixes a bug occuring on non multipolygon geometries processed in an api call
* simplifies casting into multipolygon
* simplifies casting into rlp srid (epsg:25832)
* adds proper handling in case of BadRequest (error 400)
* enhances html template for error 500
* adds new html template for error 400
* adds uuid_required decorator to missing views
* updates translations
