* keeps responsible data in compensation model for potential future purposes
* refactors registration_office and conservation_office to map onto KonovaCodes instead of own Organization model
* adds str_as_office property-method to KonovaCode to provide an easy way of rendering template data
* adds missing highlighting in case of missing information about registration office and conservation office
* extends KonovaCode command update_codelist.py for CODELIST_PROCESS_TYPE_ID
* adds preselectors for konova codes in models of CompensationAction, Law and CompensationState
* adds codelist app
* adds KonovaCodeList and KonovaCode model for fetching and storing OSIRIS Codelisten entries
* adds update_codelist command for updating and fetching codes
* adds autocomplete route for using codelists in forms
