RepoWebservice: calculation update now updates only the user-modifiable data,...

RepoWebservice: calculation update now updates only the user-modifiable data, removed depencendy on rawdata DB

-instead of reindexing the full document, the Update API now only updates the data in
 section_repository_userdata of the to be updated documents
-Webservice thus no longer requires access to the rawdata DB which simplifies the
 dependencies
-the update API call now return a json:api document with a more detailed response,
 listing successes and failures