change info-text: Click on taxa to highlight common/unique introns in text-based and graphical representation. (-> done)
on-click: render info-box with text "Intron common/unique to selected taxon are highlighted in text-based and graphical representation. Please note that respective intron positions will not be focused automatically and you might need to scroll through text-based or graphical representation to see them." -> done
on-click: un-check selections in text-based/graphical/... representation. If anything checked there, display taxon in tree in default font again.