next iteration of the jekyll page

added subpage "chat" with embedded chatclient
added FAQ subpage
merged "screenshots" and "videos" to "media"
added "support" page
active menu items are highlighted (menu gets defined in _config.yml)
icons have been added to the footer
Merge branch 'gh-pages' of https://github.com/mray/terminal-overload.org into gh-pages

Conflicts:
	_includes/header.html
	_site/aims/index.html
	_site/assets/screenshot2.jpg
	_site/assets/screenshot3.jpg
	_site/assets/screenshot4.jpg
	_site/chat/index.html
	_site/feed.xml
	_site/images/sprite.png
	_site/images/sprite.svg
	_site/index.html
	_site/main.css
	_site/release/2014/10/11/v0.3.0.html
	_site/release/2014/10/13/v0.3.1.html
	_site/support/index.html
	index.html
	media.md
Work on website.
Display "Help!" box after download.