Query improvement

Hi,

2 requsts fere:

  1. Display element type when using Querry → Part
  2. Alow multiple selections so that when you select multiple parts/bodys you can get the total number of nodes and elements

Request no. 1 makes sense, and I can add it without a problem. I also considered supporting multiple selections for the Querry tool a while ago, but it would require a different approach. Since now, an annotation is added at each click, and this behaviour would need to change.