Also
* reorder graphQl queries: Always a query constant + update function
* use id instead of token (initials) to identify person in url
* Remove any party logo related sections since currently not needed
* Move "options" from data closer to actual code since it doesn't really belong to data
(data may be deleted in the future, anyway)
* add nodeId in gql queries wherever possible to avoid problems with the apollo cache
* add note about graphql schema import to README.md
* Remove xlsx data source
* Remove scripts to convert xlsx to json
* Convert data jsons into js files as a first step towards using a proper backend call for retrieval
* Remove dependencies related to xlsx
