Misc code cleanup.
Tweaks to JS. Intermediate working stage.
Working version;
Prevents loading notif again if it's already selected and loaded;
Adds prototype method to JS array constructor 'notAgain(),' which
compares a current and last value, and returns false if they're identical;
Corrected sequencing for loading animation and AJAX;
Differentiate between real and simulated click events, so scrolling functions will always fire on notification modal launch.
Possible fix for CSS inconsistencies for notifArticle.php, when notif modal is called from non-feed pages (e.g. Circulation, Subscriptions, Sections).
Interim CSS file reconciles expmodal and notifmodal dependencies
with conflicts loading ArticlesWrap_css.css on subscriptions, circulation, and sections pages