moving to v2.x and need to get a couple of things straight...

In chronologically order here is what happened
1) I tried installing the "enlighten" plugin in my localhost development environment because the jetpack markdown is causing me fits the trying to get a markdown list with multiple-paragraph to work right » no, jetpack is not using standard, easy to comprehend markdown..

2) any way, in the course of things, I got the wordpress white screen of death

3) I removed all the plugins and added them all back just fine

4) unit I ran into:
a) "DISALLOW_FILE_EDIT is defined. You should also disallow PHP execution in GP Hooks. Learn how"
- yes I use themes security, so that may be the reason this is showing
b) regardless how do I react to this warning » I see some info in the gp support forums, but I still don't understand...

5) I then discovered:

a) gp v2.0 handled hooks differently so I checked and found:
b)find the following code in GP Hooks' wp-footer area.

<script>

jQuery(function($) {

window.onhashchange = function() {
var hash = location.hash;
$(hash).parent().trigger("click");
};

$( document ).ready(function() {
window.onhashchange();
});
});

</script>

c: what does this code (that I know I added and am now can't remember what is for), do and what do I do with it?