Bug 38069: (bug 37955 follow-up) Fix edition of table settings

Bug 38069: (bug 37955 follow-up) Fix edition of table settings

The form cannot longer be saved, and no appear appear (nothing in log,
nothing on the UI)

This is coming from bug 37955 where we modify the table_id to fix
anchors, but we didn't care of the rest of the code using this TT
variable.

This patch suggests to replace # and _ with |

Test plan:
Confirm that the form can be edited, saved, and that it is taken
correctly into account.

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>