Fixed side bar is displayed even when page does not have a sidebar.

Fixed to close sidebar when toc is clicked on smart phones.

Modified to show sidebar when toc exists.

Added visible/invisible styles.

Refactored page-footer buttons' styles.

Refactored sidebar styles.

Refactored sidebar functions.

Added sidebar functions.

Refactored sidebar styles.

Refactored.

Modified border color.

Added some styles.

Removed headings' padding and maring.

Modified to add event handler for jump to hash which taking header height into account.

Fixed fontawesome substitutions.

Refactored some style.

Fixed collapsed toc is visible.

Modified editor styles.

Modified extension manager styles.

Fixed some styles.

Fixed to trim() media query string.

Added getMediaQuery() function.

Refactored styles.
Added __media_query_sp__ and __media_query_tb__.

Modified to not use nodeList.forEach() so that works with IE11.

Modified to not use replaceAll() so that work with IE11.