New website layout

We've released a new layout for the Net Responsibility website. Feel free to
browse through it and post feedback in the [forum][]. Here are some of the
improvements:

• Nicer formatting of the text.
• Wider window for less scrolling.
• Expandable menu with more links than was able to fit as tabs.
• CSS3, the layout will look better in new browser, without breaking in older.
  Some ugly hacks have that were needed before are now removed.