added line with variable declarations to stop these being global, removed a bit…

added line with variable declarations to stop these being global, removed a bit of spurious whitespace at the end of another line

cms/static/js/views/list_textbooks.js

@@ -31,6 +31,7 @@ define(["js/views/baseview", "jquery", "js/views/edit_textbook", "js/views/show_
             "click .new-button": "addOne"
         },
         addOne: function(e) {
+            var $sectionEl, $inputEl;
             if(e && e.preventDefault) { e.preventDefault(); }
             this.collection.add([{editing: true}]); // (render() call triggered here)
             // find the outer 'section' tag for the newly added textbook