Technical Events Page Added

Bootstrap v3.3.1 added and previous version removed from css folder.
Navbar slightly changed due to responsiveness issue in previous one.
Accordion in 'index.html' is responsive now. One bug in accordion which
is flickering when we move instantly from first li to last li
Merge remote-tracking branch 'origin/development' into development

Conflicts:
	css/bootstrap.min.css
	css/css.css
	sports.html