Remove noop state: Waiting for database

[sebastian]

To fix a timing attack which led to release 21.1.1, we immediately report that we are in the "ingesting data" phase when we make the request for data to the database. This means that the "waiting for database" phase is now basically no longer existent.

Should remove this state from the system.
That means removing it from:

• query interface (where we should the different states)
• activities monitor where the states are shown when there is a high query load
• from the service which ensures state transitions always are moving forward
• from the query performance view in the administrative interface. There we should the state in the graphs that are rendered