Felter name conflicts on charting page

The various filters on the charts page get rendered with felter id’s like 'felter-option-test-div-' opt_data.value but since there is multiple instances of felter on the same page, you get conflicts e.g. when a test and test list have the same ids since they will both have div ids like 'felter-option-test-div-123'.

This can result in not all options within a filter being shown.