Hi, it's me again :-)
My last patch introduced a bug: the Apply button is not enabled when clicking on checkboxes or other fields.
Attached new file version with:
- Fix: Apply button not enabled when changing anything in an option page
- Fix: removing a filter entry does not remove the selected one but the first one
- Enhancement: avoid adding an empty string in filter lists
- Enhancement: select the next string (or the last one) when deleting a filter
