DJ-MegaMenu ver. 2.1.0

• added theme class suffix - it allows to use more than one menu with different theme on one page
• fixed module class suffix addition to menu ul element
• changed expand submenu tree to submenu type (tree or dropdown)
• added option to override default submenu type in each menu item
• added dropdown direction option in module settings and option to override it in each menu item
• added submenu background image option - it allows to add image to each submenu and set the background image position