Convert some of the big flexible mutations to to smaller specific actions

[kharann]

Some mutations are extremely flexible. However, in GraphQL you can quite simply do multiple mutations at the same time.
Therefore it is possible to split some mutations into a specific one.

Here we use the same votationId input on all the mutations. Non-significant difference in performance because everything is done in the same POST call. We should not create a pure CRUD API, rather specific ones which helps

mutation UpdateVotation($votationId: String!){
   updateVotationInfo(name: String!, description: String!, votId: $votationId){...}
   addAlternativesToVotation(alternative: AlternativeInput!, votationId: $votationId){...}
   updateMeetingSettings(blankVotes: Boolean, threshold: Int!, votationId: $votationId){...}
}

Might be nicer to do compared to have mutations with a lot of Nullable values. The fewer nullable values, the more specific and fault-tolerant the system is.