Merge pull request #12 from AdilSarwarNU/adi

Adi
bootstrap old version added  css fixed
function added
Homepage theme enlightened
	modified:   application/views/homepage_view.php
	modified:   application/views/main_header.php
	modified:   application/views/main_header_new.php
	new file:   assets/css/bootstrap3-theme.css
	new file:   assets/css/bootstrap3.css
	modified:   assets/css/home.css
	new file:   assets/js/bootstrap3.js