[site] Moving tabs to the top

Update images
First version of 'Apps' page
[site] Adding hue icon
[site] Fixing download links

Adding Hue icon
Adding picture links to apps
Making carrousel starts at page load
Adding JobSub app
[site] Fixing scroll and layout on apps page
[site] Update Job Designer screenshot
[site] Move down Hue title a bit
[site] Add Impala trademark
[site] Better screenshot for JobSub
[site] New what is Hue page

Update broken links and images
[site] Add missing image
[site] Update for 2.2 release
[site] Adding Hue meetup url
[site] Main page should point to Hue 2.2 download
[site] Update for Pig and Catalog apps
[site] Update screenshots and grammar mistakes
[doc] Hue 2.3 release
[site] Title Hue as an open source UI
[site] Fix grammar mistakes
[site] Adding link to blog
[site] Brand new site theme