Fix click action on article

Before, when the user clicks on an article header one, it expands. When it clicks a second time, it collapses.
When it clicks a third time it stays collapsed instead of expand.
Now it toggles the article between expanded and collapsed state.

p/scripts/main.js

@@ -207,14 +207,10 @@ function mark_favorite(active) {
 }
 
 function toggleContent(new_active, old_active) {
-	old_active.removeClass("active");
-
 	if (new_active.length === 0) {
 		return;
 	}
 
-	old_active.removeClass("current");
-
 	if (does_lazyload) {
 		new_active.find('img[data-original], iframe[data-original]').each(function () {
 			this.setAttribute('src', this.getAttribute('data-original'));
@@ -226,9 +222,10 @@ function toggleContent(new_active, old_active) {
 		if (isCollapsed) {
 			new_active.addClass("active");
 		}
+		old_active.removeClass("active current");
 		new_active.addClass("current");
 	} else {
-		new_active.toggleClass("current");
+		new_active.toggleClass('active');
 	}
 
 	var box_to_move = "html,body",