CON-1809 | Fix overlapping of anchored element

@RafLeszczynski As I mentioned before, I tried to use vanilla event binding and I couldn't catch clicks on ToC elements with it - I asked @kvas-damian for help and he couldn't find working solution either - only one event fired before browser scrolled to given ```id``` and it was on ```span``` element inside link. Can you think about any different solution than using jQuery here?