Fix egregious wxID leak for patch release 3.1.2

[butler]

From release 3.1.0 with the change to wx 3.0 there is an huge lead of widget ids with 5 to 10 being created per second even when the user is not doing anything on the GUI. This leads the GUI becoming completely unresponsive within a few hours and requiring a restart of the program. While rewriting the infrastructure correctly to fix this properly will take some time and effort, we need to fix the major problem quickly so that users don't see notice the issue. Ticket #448 remains in place for that, but this ticket is specifically in order to create a release 3.1.2