Prepare for release version 1.5.7

- Add: Setting to define the positioning of the mouse-over box
- Add: Setting to define an offset for the mouse-over box (precise positioning)
- Bugfix: Target element to move down to the reference container is the footnote index instead of the arrow (possibility to hide the arrow)
- Bugfix: Rating calculation for the 'other plugins' list

git-svn-id: https://plugins.svn.wordpress.org/footnotes/trunk@1006768 b8457f37-d9ea-0310-8a92-e5e31aec5664

class/dashboard/layout.php

@@ -189,8 +189,6 @@ abstract class MCI_Footnotes_LayoutEngine {
 	 * @since  1.5.0
 	 */
 	private function appendScripts() {
-		// add jQuery to the sub menu page
-		wp_enqueue_script('jquery');
 		// enable meta boxes layout and close functionality
 		wp_enqueue_script('postbox');
         // add WordPress color picker layout