added regarding DATABASE
updated layouts and preparing set up classes
udpated little csss
created some controller and views
updated session controller and helper
added some views and mailer functions
updated css of view
deleted header.html.erb and footer.html.erb
updated dropdown mene
completed footer and header that are responsive :)
updated view and signin_checker
completed links and signed_in checkers on view
completed render and routing of expain and contact pages
added url & array checker and linkscontroller
updated MVC for comments
updated some controllers
updated some modules and set foreign key by automatically
updated some controllers
updated links view and db......
adjust views