add dummy class for auto generated queries
Implemented click event on middle column
Added autogenerated queries accordion panel, but this is already decpercated.
change default description
remove accordion for example queries
Indtroduced new example query in annopool database schema.
Refactor bulk import.
Refactor bulk import of resolver vis map next iteration.
Read from query example from example_queries.tab in the corpus folder or from
the resource folder.
implemented the rest api for getting example queries
Fixes a stupid comparison in the ListExampleQueriesHelper and wrote comments.
Set the value of the used_operators column  instead "used_operator".
Show the content of the example_quries table in the example quries tab of the frontend.
Change the example_queries.tab from four to two columns for easier editing.
QueryService could answer questions for serveral corpora example queries.
Show example queries according to the selected corpus.
If no example queries exist for the selected corpus, the button is deactived.