To make visible or display Bangla UNICODE in Joomla 3.3.3

To support UTF-8 or Bangla Unicode in Joomla 3.3.3, make sure to change 'Collation' column from 'latin1_swedish_ci' to 'utf8_unicode_ci' in the following table:
 
To remove the lime-colored question mark, edit this file /plugins/content/hs_highlighter/lib/styles/shThemeDefault.css and add: display: none; in the inside the following code:
 
To remove Facebook comment field from the bottom of the article, edit this file /templates/ja_wall/html/com_content/article/default.php by removing the following code:
 

Remove "Home" title from every single article in JA Wall Template

Menus -> Main Menu -> Home -> Page Display Options -> Show Page Heading -> No
 
You may not want to see the Powered by Joomla or other copyright information in your Joomla CMS. Though it is strongly encourages to everyone not to remove this.