[CORE][COMPOSER] Move extlib packages with immediate composer correspondent to composer dependencies

This adds a composer.json for all dependencies that are available

public/plugins/Bookmark/js/bookmark.js

@@ -0,0 +1,36 @@
+var Bookmark = {
+
+    // Special XHR that sends in some code to be run
+    // when the full bookmark form gets loaded
+    BookmarkXHR: function(form)
+    {
+        SN.U.FormXHR(form, Bookmark.InitBookmarkForm);
+        return false;
+    },
+
+    // Special initialization function just for the
+    // second step in the bookmarking workflow
+    InitBookmarkForm: function() {
+        SN.Init.CheckBoxes();
+        $('fieldset fieldset label').inFieldLabels({ fadeOpacity:0 });
+        SN.Init.NoticeFormSetup($('#form_new_bookmark'));
+    }
+}
+
+$(document).ready(function() {
+
+    // Stop normal live event stuff
+    $(document).off("submit", "form.ajax");
+    $(document).off("click", "form.ajax input[type=submit]");
+
+    // Make the bookmark submit super special
+    $(document).on('submit', '#form_initial_bookmark', function (e) {
+        Bookmark.BookmarkXHR($(this));
+        e.stopPropagation();
+        return false;
+    });
+
+    // Restore live event stuff to other forms & submit buttons
+    SN.Init.AjaxForms();
+
+});