[aerogear-dev] Site Improvements

I have updated the main nav to group docs stuff and add news to the main nav. I have updated the left nav to nest the docs items and I have also added an index page for news which is just static links for now which we could make dynamic at some point. Here are some screen shots. Let me know what you think. New Top Navigation http://cl.ly/image/3E0A1a2O3r16 New Documentation Drop down http://cl.ly/image/0F0v1c2k2B0K New Left Nav and Documentation Index Page http://cl.ly/image/1j3N042n2w28 New Left Nav and Top Nav showing active page http://cl.ly/image/0F3G0U3t2s2Z New News Index page http://cl.ly/image/0J383h0x101H And finally, the PR. https://github.com/aerogear/aerogear.org/pull/23