If "Snap to grid" option is enabled, then ports of an element created with "Create Element with Command Line Tool" dialog can be drawn on the same position by default

Scenario:

1. Ensure that "Snap to grid" option is enabled. It is in the "Application Settings" dialog, on the "Workflow Designer" page.
2. Open the Workflow Designer.
3. Click on the "Create element with command line tool" button on the toolbar.
4. Set any valid short element name ("qwerty"). Do not set the element description.
5. Click on the "Next" button.
6. Add 5 input ports, set any valid names for them.
7. Do not add anything else, proceed to the wizard end. Accept the wizard.
8. Add the created element to the scene.
   Current result: two input ports are drawn on the same position because of "snap to grid" option.
   Expected result: all input ports are drawn on the different positions. The element size should be enlarged in case of position lack.