finalized blogpost
finalized EMR blog post
extended the YARN documentation
some typos in the blog post
Add text for mailing list sign up
Adjusted text for mailing list signup
Merge pull request #486 from rmetzger/yarnDocsUpdate

extended the YARN documentation on the website
GSoC announcement
hide the vagrant / virtual machine images
Changed People page.
Changed People page.
removed affiliated
removed affiliated
rework downloads page, added FAQ entry and fixed GSOC blog post
Merge remote-tracking branch 'gith_ozone/gh-pages' into rmetzger_preview
Merge branch 'pages_hadoopdep' into rmetzger_preview