Issue #9647: Fix layers entries inconsistency
As described in #9647 (closed) , the layer related entries have a different order, even though they are the same entries, apparently without a fair reason.
This MR fixes this clear UX issue by taking the menu derived from the menu bar as a paradigm (First I was unsure which paradigm to take, but commit 9ad5049d clarified things quite a bit).
| BEFORE (unpredictable order -> bad learning curve) | AFTER (same/linear order -> very easy learning curve) |
|---|---|
 |
 |
After the merge, the user will be able to quickly use the learned entries order in all layer menus, which is much simpler.
More details in the commits message.
Edited by Bruno