Report designer: Always send clicked signal when the user clicks inside a section.

The view needs this to dectivate active scene and activate new schene
when an element is clicked in a deactivee scene.
This leads to confusing behaviour, see below.

Test:
Add a label to group section and a field to detail section

1. Select the label
2. Press RMB over label
3. Delete

Before:

1. Both label and field shows as selcted, detail section still active
2. Context menu shown
3. Field in detail section deleted

After:

1. Field deselected, detail section deactive Group section activated, label selected
2. Context menu shown
3. Label deleted

see above