Added fontawesome and improve CSS
Ignore .idea/
Merge remote-tracking branch 'upstream/master' into bootstrap

* upstream/master: (34 commits)
  Add announcement as PDF, make tabs linkable, use bootstrap thumbnails for promo images
  Attribute all the images correctly
  Use the grid instead of tabs to display promo images
  add press-images.zip
  fixed it! tabs in tabs, let's see what Henne says...
  tried to make it prettier....
  fix fonts in poster
  Fix some wording and layout in the press section
  Add mailing list to the header menu
  add media in navbar
  add media page
  add and fix banners
  update home1.png
  Link to the G+ and Facebook event pages
  add standard banner we used to have for blogs
  Add the Code of Cunduct image
  Add the Code of Conduct to the page
  wording fix to location
  missing space due to merge
  minor changes
  ...

Conflicts:
	.gitignore
	content/index.html
	layouts/about.html
	layouts/location.html
	layouts/program.html
	layouts/sponsors.html
	static/css/conference.css
Add up missing up arrow to back to top link
Merge pull request #2 from cassiolupifieri/master

CSS improvement